At the A1 level, you only need to know that 'incomestible' means 'you cannot eat it.' It is the opposite of 'comestible,' which means 'you can eat it.' Think of it like a red light for your mouth. If you see a mushroom in the forest and your teacher says 'C'est incomestible,' you must not put it in your mouth. It is a very useful word for safety. You might see it on signs or in simple books about nature. Even though it is a long word, it is easy to remember because it looks like the English word 'edible' with 'in-' at the beginning. Just remember: Comestible = Yes, Incomestible = No. In simple sentences, we say 'Le fruit est incomestible' or 'Ce n'est pas bon, c'est incomestible.' You don't need to worry about complex grammar yet; just use it to describe things that are not food.
At the A2 level, you can start using 'incomestible' to describe why certain things are not good to eat. You might use it when talking about cooking or nature. For example, 'Cette plante est incomestible car elle est toxique.' You should also notice that the word does not change between masculine and feminine singular (un fruit incomestible, une plante incomestible). This makes it easier to use in conversation. You will start to see it in more contexts, like on food packaging or in short news articles about food safety. It is more formal than saying 'on ne peut pas le manger.' Using 'incomestible' shows you are moving towards a more precise level of French. You can also start to compare it with 'immangeable,' which is what you say when a pizza is burnt and tastes bad, though technically you *could* eat it if you had to.
At the B1 level, you should understand the objective nature of 'incomestible.' This word is used for things that are biologically or chemically unfit for consumption. It is common in more detailed discussions about the environment, health, and science. You should be able to explain the difference between something being 'incomestible' (unsafe) and 'immangeable' (bad tasting). For example, in a discussion about pollution, you could say: 'À cause de la pollution de l'eau, les poissons sont devenus incomestibles.' You will also encounter the word in more formal writing, such as instructions, safety manuals, or culinary critiques. You should be comfortable using it in the plural ('des baies incomestibles') and understand its role in defining safety standards. It is a key word for anyone interested in French outdoor activities like hiking or mushroom picking, where identifying 'les espèces incomestibles' is a vital skill.
At the B2 level, you are expected to use 'incomestible' with nuance and in more complex sentence structures. You might use it in a metaphorical sense, though 'indigeste' is more common for ideas. You should be able to discuss food safety regulations or environmental issues using this term. For instance, you could participate in a debate about GMOs or pesticides and describe how certain practices might render crops 'incomestibles' for certain populations. You should also be aware of the register; 'incomestible' is a neutral to formal term. In a professional setting, like a restaurant kitchen or a lab, this is the standard word. You can use it in conditional sentences: 'Si nous ne faisons pas attention, ces ressources deviendront incomestibles.' Your understanding should also include the cultural context of foraging in France and the legal implications of a product being declared 'incomestible' by health authorities.
At the C1 level, you should have a sophisticated grasp of 'incomestible' and its place within the broader French vocabulary of consumption and safety. You can use it to discuss complex topics in biology, law, or philosophy. For example, you might analyze a text where 'incomestible' is used as a metaphor for a society that produces things that cannot be 'consumed' or 'absorbed' by its citizens. You should be able to distinguish it perfectly from synonyms like 'délétère,' 'nocif,' 'insalubre,' and 'impropre.' Your usage should be precise, reflecting an understanding of the subtle differences between a biological toxin and a physical impossibility. You might also use it in high-level culinary writing to describe the boundary between art and food. 'L'œuvre était magnifique mais, par sa composition chimique, restait strictement incomestible.' Your command of the word should feel natural in both academic and professional environments.
At the C2 level, 'incomestible' is a tool for precise and evocative expression. You can use it in literary analysis, scientific research, or high-level policy discussions. You understand its etymological roots and how it relates to other words in the 'comedere' family. You can use it to create irony or to make a strong point about environmental degradation or the failures of the food industry. In a C2 context, you might explore the philosophical implications of the 'incomestible'—that which exists but cannot be integrated into the human body or mind. You should be able to write an essay on food security where 'incomestible' is used to describe the tragic state of resources in polluted regions. Your ability to switch between the literal, legal, and metaphorical meanings of the word should be seamless, demonstrating a deep integration of French linguistic nuances and cultural knowledge.

incomestible in 30 Seconds

  • Incomestible means 'inedible' and is used for things that are unsafe to eat due to toxicity or contamination.
  • It is a formal and scientific word, commonly used in nature, health reports, and food safety contexts.
  • The word is distinct from 'immangeable,' which usually describes food that just tastes very bad.
  • It is an adjective that agrees in number (singular/plural) but not in gender (masculine/feminine are the same).

The French adjective incomestible is a crucial term for anyone navigating the worlds of nature, gastronomy, or safety in a French-speaking environment. At its most fundamental level, it translates to 'inedible' or 'not fit for human consumption.' However, its usage goes far beyond a simple label on a discarded piece of fruit. The word is constructed from the negative prefix in- and the adjective comestible, which originates from the Latin verb comedere, meaning 'to eat up' or 'to consume.' Understanding this word is not just a matter of vocabulary; it is a matter of safety and precision. In France, a country with a deep-rooted tradition of foraging for mushrooms (la cueillette des champignons), the distinction between what is comestible and what is incomestible is taught from a very young age. It refers to substances that are naturally toxic, chemically contaminated, or simply physically impossible for the human digestive system to process without causing harm or illness.

Scientific Precision
In botanical and mycological contexts, incomestible is used to categorize species that contain toxins, even if those toxins are not immediately lethal. It separates the 'food' from the 'danger'.

Attention, ce spécimen de bolet est classé comme incomestible en raison de son amertume extrême et de sa toxicité potentielle.

Beyond the literal sense of toxicity, the term can occasionally be used in a more technical or regulatory framework. For instance, in the food industry, products that have expired or have been exposed to pollutants are legally declared incomestibles. This transition from a biological state to a legal status is important for commerce and public health. While immangeable is often used informally to describe food that tastes terrible (like a burnt steak), incomestible carries a weight of objective reality—it is not a matter of opinion or culinary skill, but a matter of biological compatibility. If you eat something incomestible, you are likely to face physiological consequences. This makes the word common in textbooks, warning signs in parks, and official health reports. It is a formal, precise, and serious word that demands attention whenever it is encountered.

Les baies rouges de cet arbuste sont incomestibles pour l'homme, bien que les oiseaux les apprécient.

Metaphorical Nuance
While rare, an intellectual concept or a piece of writing could be described as 'incomestible' if it is so dense or poorly constructed that it cannot be 'digested' by the mind, though 'indigeste' is more common here.

Après l'incendie, tout le stock de farine a été déclaré incomestible par les services d'hygiène.

Environmental Context
In ecology, certain plants develop 'incomestible' parts as a defense mechanism against herbivores, a fascinating area of study in French biology classes.

Il est impératif de ne jamais consommer une plante sauvage si elle est marquée comme incomestible dans votre guide.

Certaines espèces de poissons tropicaux deviennent incomestibles à cause de la ciguatera.

Using incomestible correctly in a sentence requires an understanding of French adjective agreement and syntax. As an adjective, it must agree in number with the noun it describes. Fortunately, because it ends in '-e', the masculine and feminine singular forms are identical. To make it plural, you simply add an '-s'. It typically follows the noun it modifies, which is standard for most multi-syllabic French adjectives. When you are constructing sentences, you will often find it following the verb être (to be) or devenir (to become). This structure helps define the state of an object. For example, 'La viande est devenue incomestible' (The meat has become inedible). This implies a change in state, perhaps due to decay or contamination.

Subject-Verb-Adjective
This is the most common pattern. You identify a food item and assign the quality of being inedible to it. Example: 'Ces fruits sont incomestibles.'

Le guide précise que toutes les parties de cette fleur sont incomestibles.

Another way to use the word is as an attributive adjective directly following the noun. This is common in lists or descriptive passages. For example, 'Il a ramassé des champignons incomestibles.' Here, the adjective helps categorize the specific type of mushrooms he picked. It is also useful in the passive voice or with verbs of perception. 'Ce plat est jugé incomestible par les experts' (This dish is judged inedible by experts). In this context, the word takes on a more formal, evaluative tone. It is important to note that while incomestible is an absolute quality, you can occasionally see it modified by adverbs like totalement or absolument to emphasize the danger or the certainty of the classification.

La pollution a rendu les coquillages de cette zone incomestibles pour plusieurs années.

Causal Structures
Using verbs like 'rendre' (to make/render) is very common: 'La moisissure rend le pain incomestible.'

Ne confondez pas cette racine avec un navet ; elle est incomestible et amère.

The Negative Construction
Sometimes people say 'pas comestible' instead of 'incomestible'. While 'pas comestible' is more common in speech, 'incomestible' is the preferred written form.

L'odeur nauséabonde indiquait clairement que le poisson était devenu incomestible.

La réglementation européenne définit strictement ce qui est considéré comme incomestible.

You will encounter the word incomestible in several specific real-world contexts in France and other Francophone countries. One of the most common places is in nature parks or forests. France has a massive culture of foraging for wild mushrooms, and local pharmacies often offer a service where a pharmacist will identify your harvest to ensure you haven't picked anything incomestible. You will see this word on posters in these pharmacies or on warning signs along hiking trails. It serves as a vital warning to hikers and nature enthusiasts. Another major context is in the news, specifically regarding food recalls. When a batch of food is contaminated with bacteria like Salmonella or E. coli, the news reports will state that the products are 'impropres à la consommation' or simply incomestibles. This formal usage underscores the health risk involved.

Educational Media
Documentaries about wildlife often use this term to explain why certain animals avoid specific plants or how toxins work in the food chain.

À la télévision, l'expert a expliqué pourquoi cette algue est incomestible pour les humains.

In the culinary world, you might hear this word during high-stakes cooking competitions like 'Top Chef France.' If a contestant serves something that is physically impossible to eat—perhaps because it is raw in a dangerous way or contains non-food elements—a judge might harshly describe the dish as incomestible. This is a devastating critique, implying the dish fails at its most basic function of being food. Furthermore, in the context of environmental science and ecology, researchers use incomestible to describe the impact of pollution on local flora and fauna. If a river is polluted, the fish may become incomestibles. This word is thus a bridge between everyday survival and complex scientific or legal discourse. It is rarely used in casual, friendly conversation about a meal that just tasted 'bad'; for that, people prefer pas bon or mauvais. Hearing incomestible indicates that the conversation has shifted to a level of objective safety or professional standards.

Le panneau indiquait que l'eau du puits était incomestible sans traitement préalable.

Legal Documentation
Health inspectors write 'incomestible' in their reports when a restaurant fails to store food at the correct temperature.

Les scientifiques étudient pourquoi certaines baies sont incomestibles pour l'homme mais pas pour les rongeurs.

Survival Contexts
In survival manuals, 'incomestible' is a frequent label for plants that should be avoided to prevent illness.

L'inspecteur a saisi des kilos de viande incomestible dans cet entrepôt insalubre.

La présence de métaux lourds a rendu les poissons de cette rivière incomestibles.

One of the most frequent errors English speakers make when using incomestible is confusing it with immangeable. While they both translate to 'inedible' in English, their nuances in French are distinct. Immangeable is often subjective and refers to taste or quality. If a soup is too salty, you might say it is immangeable—meaning you simply don't want to eat it. However, if the soup contains poisonous mushrooms, it is incomestible. Using incomestible for a salty soup would sound overly dramatic or clinical, as if the salt had reached a level of chemical toxicity. Another mistake is the confusion between incomestible and vénéneux. While all vénéneux (poisonous) things are incomestibles, not all incomestibles things are vénéneux. A piece of plastic is incomestible because it's not food, but it isn't necessarily a 'poisonous plant' in the biological sense.

The 'Taste' Trap
Avoid using 'incomestible' just because you dislike the flavor of a dish. Use 'mauvais' or 'détestable' instead.

Erreur : 'Ce gâteau est incomestible parce qu'il y a trop de sucre.' (Correction : Utilisez 'immangeable' ou 'trop sucré').

Grammatically, learners often forget the plural 's'. Since incomestible ends in 'e', it looks the same for masculine and feminine, which is a relief, but the plural incomestibles is mandatory when referring to multiple items. Another subtle mistake involves the difference between vénéneux and venimeux. Vénéneux refers to things that are toxic when eaten (like mushrooms), whereas venimeux refers to animals that inject venom (like snakes). Both result in something being incomestible, but the source of the danger is different. Finally, some learners try to use 'non-comestible' as a direct translation of 'non-edible'. While 'non comestible' is grammatically possible and occasionally used on labels, incomestible is the more sophisticated and standard single-word adjective in French literature and formal speech.

Attention : Ne dites pas qu'un serpent est incomestible s'il est simplement dangereux au toucher ; le mot concerne la consommation.

Register Confusion
Using 'incomestible' in a casual conversation with friends about a bad meal might make you sound like a biology professor.

Il est faux de dire que la pierre est incomestible dans un contexte culinaire ; c'est une évidence physique.

Preposition Errors
Sometimes people say 'incomestible à manger', which is redundant. Just say 'incomestible'.

La confusion entre incomestible et toxique est fréquente, mais le premier est plus large.

Certains pensent que incomestible signifie 'sans goût', ce qui est totalement faux.

Exploring the synonyms and alternatives to incomestible allows for more precise expression. The most common alternative is immangeable. As discussed, immangeable is the word of choice for food that is technically safe but practically impossible to eat due to poor preparation, such as being burnt, frozen solid, or excessively spicy. If you are in a restaurant and the food is terrible, immangeable is your go-to word. On the more serious side, we have toxique (toxic) and vénéneux (poisonous for plants/fungi). These words specify *why* something is incomestible. Toxique is a general scientific term, while vénéneux is specific to the natural world. Another related term is impropre à la consommation, a formal phrase often used by health authorities and in legal contexts.

Incomestible vs. Immangeable
Incomestible = Objective danger/impossibility. Immangeable = Subjective quality/bad taste.

Le pain rassis est immangeable car il est trop dur, mais il n'est pas forcément incomestible.

For items that are not food at all, such as wood or metal, we might use non-alimentaire. This is often seen on packaging for products like glue or paint. In a more metaphorical sense, if a book or a speech is very difficult to understand, we use indigeste (undigestible). This is a very common and colorful way to describe something boring or overly complex. Finally, nocif (harmful) or délétère (deleterious) can be used to describe substances that have a slow, negative effect on health, even if they don't make you immediately sick. Choosing the right word depends entirely on the context: are you warning someone about a deadly mushroom (vénéneux), complaining about a bad chef (immangeable), or reading a government safety report (incomestible)?

Cet article scientifique est indigeste tant il contient de jargon technique.

Formal Alternatives
'Dénué de valeur nutritive' (devoid of nutritional value) is a very academic way to describe something incomestible.

La viande avariée est incomestible et présente un risque biologique majeur.

Incomestible vs. Toxique
Toxique implies poison; incomestible just means it shouldn't be eaten (including for physical reasons like being too hard).

L'eau de mer est incomestible en grandes quantités à cause de sa forte teneur en sel.

Les baies de l'if sont vénéneuses et donc strictement incomestibles.

How Formal Is It?

Fun Fact

The root 'edere' (to eat) is also found in the English word 'edible' and the German word 'essen'. The prefix 'com-' in 'comedere' adds an intensive meaning, like 'to eat completely'.

Pronunciation Guide

UK /ɛ̃.kɔ.mɛs.tibl/
US /æ̃.koʊ.mɛs.tibl/
In French, stress is generally even, with a slight emphasis on the final syllable 'tible'.
Rhymes With
comestible flexible visible possible sensible terrible horrible pénible
Common Errors
  • Pronouncing the 'n' in 'in-' as a hard English 'n' instead of a nasal vowel.
  • Making the 'e' at the end of 'stible' too loud; it should be almost silent.
  • Pronouncing 'com' like 'come' instead of with an open 'o' sound.
  • Using an English 'i' sound for the first syllable instead of the nasal French 'in'.
  • Over-stressing the 'me' syllable.

Difficulty Rating

Reading 2/5

Easy to recognize due to its similarity to the English word 'edible' and the prefix 'in-'.

Writing 3/5

Requires remembering the correct spelling and the plural agreement.

Speaking 4/5

The nasal 'in-' and the 'stible' ending can be tricky for beginners to pronounce smoothly.

Listening 3/5

Easy to hear in clear speech, but can be confused with 'comestible' if the first syllable is missed.

What to Learn Next

Prerequisites

manger bon mauvais fruit plante

Learn Next

vénéneux venimeux toxique consommation digestion

Advanced

incomestibilité délétère insalubre nocif

Grammar to Know

Adjective Agreement with '-e' endings

Un fruit incomestible / Une baie incomestible (No change for gender).

Pluralization of adjectives

Des produits incomestibles (Add an 's').

Nasal Vowel 'in'

The 'in' in 'incomestible' follows the same rule as 'interdit' or 'intelligent'.

The verb 'Rendre' + Adjective

La pollution rend l'eau incomestible.

Negative prefix 'in-'

Used in words like 'invisible', 'incroyable', and 'incomestible'.

Examples by Level

1

Ce fruit est incomestible.

This fruit is inedible.

Simple subject-verb-adjective structure.

2

Ne mange pas ça, c'est incomestible !

Don't eat that, it's inedible!

Imperative negative + 'c'est' + adjective.

3

La pierre est incomestible.

The stone is inedible.

Basic noun-adjective agreement.

4

Est-ce que ce champignon est incomestible ?

Is this mushroom inedible?

Interrogative form with 'est-ce que'.

5

Les fleurs sont jolies mais incomestibles.

The flowers are pretty but inedible.

Plural agreement of 'incomestibles'.

6

C'est un objet incomestible.

It is an inedible object.

Adjective following the noun.

7

Le plastique est incomestible.

Plastic is inedible.

Definite article with a general substance.

8

Regarde, ce n'est pas comestible, c'est incomestible.

Look, it's not edible, it's inedible.

Contrast between opposite adjectives.

1

Il y a beaucoup de baies incomestibles dans la forêt.

There are many inedible berries in the forest.

Plural adjective matching 'baies'.

2

Cette herbe est incomestible pour l'homme.

This grass is inedible for humans.

Use of 'pour' to specify the subject.

3

Le guide dit que ce poisson est incomestible.

The guide says that this fish is inedible.

Indirect speech with 'que'.

4

Attention, certains champignons sont incomestibles et dangereux.

Watch out, some mushrooms are inedible and dangerous.

Two adjectives describing the same noun.

5

Pourquoi ce fruit est-il incomestible ?

Why is this fruit inedible?

Question with 'pourquoi' and inversion.

6

Les feuilles de cette plante deviennent incomestibles en hiver.

The leaves of this plant become inedible in winter.

Verb 'devenir' used with the adjective.

7

Mon chien a mangé quelque chose d'incomestible.

My dog ate something inedible.

Use of 'de' after 'quelque chose'.

8

Ce n'est pas du chocolat, c'est de la cire incomestible.

It's not chocolate, it's inedible wax.

Partitive article 'de la' with an adjective.

1

La pollution des sols rend les légumes incomestibles.

Soil pollution makes the vegetables inedible.

The verb 'rendre' followed by an adjective.

2

Il faut apprendre à distinguer les espèces comestibles des espèces incomestibles.

One must learn to distinguish edible species from inedible species.

Infinitive verb 'distinguer' with prepositions.

3

Cette substance chimique est totalement incomestible.

This chemical substance is totally inedible.

Adverb 'totalement' modifying the adjective.

4

Après trois semaines, le pain est devenu incomestible à cause de la moisissure.

After three weeks, the bread became inedible because of mold.

Causal phrase 'à cause de'.

5

Les experts ont déclaré que l'eau du fleuve était incomestible.

The experts declared that the river water was undrinkable/inedible.

Imperfect tense 'était' in a subordinate clause.

6

Il est dangereux de consommer des racines incomestibles.

It is dangerous to consume inedible roots.

Impersonal 'Il est' + adjective + 'de' + infinitive.

7

Ce produit de nettoyage est étiqueté comme incomestible.

This cleaning product is labeled as inedible.

Passive construction 'est étiqueté'.

8

Bien que ce champignon ressemble à une girolle, il est incomestible.

Although this mushroom looks like a chanterelle, it is inedible.

Conjunction 'Bien que' requiring the subjunctive (though 'ressemble' is the same in indicative).

1

La réglementation interdit la vente de produits jugés incomestibles.

Regulations prohibit the sale of products judged to be inedible.

Past participle 'jugés' acting as a modifier.

2

Certaines fleurs exotiques, bien que magnifiques, s'avèrent incomestibles.

Some exotic flowers, though magnificent, turn out to be inedible.

Pronominal verb 's'avérer' meaning 'to turn out to be'.

3

L'accumulation de métaux lourds rend la chair de ces poissons incomestible.

The accumulation of heavy metals makes the flesh of these fish inedible.

Noun phrase as a complex subject.

4

Il ne faut pas confondre le goût amer avec une nature incomestible.

One must not confuse bitter taste with an inedible nature.

Infinitive construction with 'confondre... avec'.

5

Les autorités sanitaires ont retiré du marché ces lots incomestibles.

Health authorities have withdrawn these inedible batches from the market.

Compound past tense 'ont retiré'.

6

Ce traitement chimique a rendu la récolte entière incomestible.

This chemical treatment has rendered the entire harvest inedible.

Direct object 'la récolte entière' followed by the adjective.

7

La survie dépend de votre capacité à identifier ce qui est incomestible.

Survival depends on your ability to identify what is inedible.

Relative pronoun 'ce qui'.

8

Malgré les apparences, cette substance est strictement incomestible.

Despite appearances, this substance is strictly inedible.

Prepositional phrase 'Malgré les apparences'.

1

L'industrialisation à outrance a parfois pour corollaire la production de denrées incomestibles.

Excessive industrialization sometimes has the production of inedible foodstuffs as a corollary.

Advanced vocabulary like 'à outrance' and 'corollaire'.

2

Le rapport souligne que la contamination croisée a rendu les stocks incomestibles.

The report highlights that cross-contamination has rendered the stocks inedible.

Subordinate clause with 'que' and 'le passé composé'.

3

Il est paradoxal qu'une plante si nutritive possède des racines si incomestibles.

It is paradoxical that such a nutritious plant has such inedible roots.

Subjunctive mood after 'Il est paradoxal que'.

4

La distinction entre le toxique et l'incomestible est parfois ténue en botanique.

The distinction between the toxic and the inedible is sometimes thin in botany.

Using adjectives as nouns ('le toxique', 'l'incomestible').

5

Ce projet de loi vise à empêcher que des produits incomestibles ne parviennent aux consommateurs.

This bill aims to prevent inedible products from reaching consumers.

Expletive 'ne' after 'empêcher que'.

6

L'amertume, bien que n'étant pas un signe d'incomestibilité, est souvent un avertissement.

Bitterness, while not a sign of inedibility, is often a warning.

Present participle 'n'étant pas' and the noun 'incomestibilité'.

7

Les critiques ont qualifié son œuvre de visuellement splendide mais conceptuellement incomestible.

Critics described his work as visually splendid but conceptually inedible.

Metaphorical use of the adjective.

8

À mesure que le climat change, certaines ressources marines deviennent incomestibles.

As the climate changes, certain marine resources are becoming inedible.

Complex conjunction 'À mesure que'.

1

La frontière entre le sublime et l'incomestible s'estompe dans cette cuisine expérimentale.

The boundary between the sublime and the inedible blurs in this experimental cuisine.

Pronominal verb 's'estomper' and abstract nouns.

2

On ne saurait trop insister sur le danger de consommer des spécimens réputés incomestibles.

One cannot overemphasize the danger of consuming specimens reputed to be inedible.

Formal 'on ne saurait' construction.

3

L'œuvre de cet auteur est une prose dense, presque incomestible pour le lecteur non averti.

This author's work is dense prose, almost inedible for the uninitiated reader.

Extended metaphor using 'incomestible'.

4

L'incomestibilité de ces baies constitue un mécanisme de défense évolutif sophistiqué.

The inedibility of these berries constitutes a sophisticated evolutionary defense mechanism.

Noun 'incomestibilité' as the subject.

5

Par un étrange retour des choses, ce qui était autrefois un mets délicat est devenu incomestible.

By a strange turn of events, what was once a delicacy has become inedible.

Complex introductory phrase and relative clause.

6

La dégradation environnementale a rendu ces terres arables mais leurs fruits incomestibles.

Environmental degradation has left these lands arable but their fruits inedible.

Coordinating conjunction 'mais' linking two adjectives.

7

Sous l'apparence de la satiété, la société de consommation produit des objets fondamentalement incomestibles.

Under the guise of satiety, the consumer society produces fundamentally inedible objects.

Philosophical and sociological context.

8

Il s'agit d'une substance dont la structure moléculaire la rend intrinsèquement incomestible.

It is a substance whose molecular structure makes it intrinsically inedible.

Relative pronoun 'dont' and adverb 'intrinsèquement'.

Common Collocations

champignon incomestible
baie incomestible
plante incomestible
produit incomestible
chair incomestible
substance incomestible
devenir incomestible
juger incomestible
déclarer incomestible
strictement incomestible

Common Phrases

impropre à la consommation

— The official bureaucratic way to say something is incomestible. It is used in legal and health warnings.

Ce lot de viande a été déclaré impropre à la consommation.

ne pas consommer

— A common warning found on labels of incomestible items. It is a direct instruction.

Produit toxique, ne pas consommer.

danger de mort

— Often seen alongside 'incomestible' for highly toxic plants or mushrooms. It indicates extreme danger.

Champignon incomestible : danger de mort.

non destiné à l'alimentation

— Used for items that might look like food but are actually incomestible. Common on decorative items.

Ce maïs décoratif est non destiné à l'alimentation.

à rejeter

— Used in foraging guides to tell you to throw away incomestible specimens. It means 'to be rejected'.

Spécimen amer et incomestible, à rejeter.

sans valeur nutritive

— Describes something that isn't toxic but is incomestible because it provides no food value. It is more clinical.

Cette fibre est incomestible et sans valeur nutritive.

rendu incomestible par

— Explains the cause of the inedibility. It is a common structure in explanations.

Le plat a été rendu incomestible par l'excès de sel.

considéré comme incomestible

— Used when there is a consensus or a rule about something. It reflects a standard view.

Le lierre est considéré comme incomestible.

totalement incomestible

— Emphasizes that there is no part of the item that can be eaten. It leaves no room for doubt.

Cette racine est totalement incomestible.

espèce incomestible

— The standard way to categorize a type of plant or mushroom in science. It is very common in biology.

Il existe de nombreuses espèces incomestibles dans cette région.

Often Confused With

incomestible vs immangeable

Immangeable is about bad taste; incomestible is about safety/toxicity.

incomestible vs imbuvable

Imbuvable is specifically for liquids; incomestible is for solids (though sometimes used generally).

incomestible vs vénéneux

Vénéneux is a type of incomestible (poisonous plant); incomestible is the broader category.

Idioms & Expressions

"C'est de la semelle"

— Literally 'it is shoe leather.' Used for meat that is so tough it is almost incomestible. It is a common culinary complaint.

Ce steak est de la semelle !

informal
"C'est de la piquette"

— Used for very bad wine that is almost incomestible. It implies low quality.

Je ne bois pas ça, c'est de la piquette.

informal
"Avaler des couleuvres"

— Literally 'to swallow grass snakes.' It means to accept something unacceptable or 'incomestible' metaphorically. It relates to believing lies.

Il a dû avaler bien des couleuvres dans ce travail.

idiomatic
"C'est imbuvable"

— Used for liquids that are so bad they are 'incomestible' (undrinkable). Can also apply to people with bad attitudes.

Ce café est imbuvable.

neutral
"Rester sur l'estomac"

— Literally 'to stay on the stomach.' Used for food that was 'incomestible' or hard to digest. It also means to be upset about something.

Sa remarque m'est restée sur l'estomac.

idiomatic
"C'est du poison"

— Literally 'it is poison.' Used for very bad food or drink to emphasize its 'incomestible' nature. It is hyperbolic.

Ne mange pas ça, c'est du poison !

informal
"Avoir un estomac d'autruche"

— To have an ostrich's stomach. It means being able to eat almost anything, even things that are normally incomestible.

Il peut manger n'importe quoi, il a un estomac d'autruche.

idiomatic
"C'est indigeste"

— Used metaphorically for a book or speech that is so boring or complex it is 'incomestible' for the mind.

Son dernier roman est totalement indigeste.

neutral
"Manger de la vache enragée"

— To eat 'mad cow.' It means to go through a period of great hardship or hunger, having to eat whatever is available.

Pendant ses études, il a mangé de la vache enragée.

idiomatic
"C'est de la bouillie"

— Literally 'it is porridge/mush.' Used for something poorly made that has become 'incomestible' or lost its structure.

Avec toute cette pluie, le terrain est de la bouillie.

informal

Easily Confused

incomestible vs venimeux

Both relate to poison.

Venimeux is for animals that bite/sting (snakes). Vénéneux is for plants you eat. Both make the source incomestible.

Un serpent venimeux, une baie vénéneuse.

incomestible vs indigeste

Both involve the stomach.

Indigeste means hard to digest or causing an upset stomach. Incomestible means you shouldn't eat it at all.

Un repas trop gras est indigeste.

incomestible vs comestible

They sound very similar.

They are opposites. In- is the negative prefix.

Ce champignon est comestible, mais celui-là est incomestible.

incomestible vs insalubre

Both relate to health risks.

Insalubre usually refers to a place or environment (a dirty room). Incomestible refers specifically to food/substances.

Il vit dans un appartement insalubre.

incomestible vs infect

Both describe bad things to eat.

Infect means disgusting or foul-smelling. It's more about the sensory experience.

Cette odeur est infecte.

Sentence Patterns

A1

Le [noun] est incomestible.

Le savon est incomestible.

A2

Ce sont des [noun]s incomestibles.

Ce sont des baies incomestibles.

B1

[Noun] devient incomestible à cause de [reason].

La viande devient incomestible à cause de la chaleur.

B1

Il est [adjective] de manger des [noun]s incomestibles.

Il est dangereux de manger des champignons incomestibles.

B2

[Subject] rend le/la [noun] incomestible.

La bactérie rend le lait incomestible.

B2

[Noun] est jugé incomestible par [authority].

Le lot est jugé incomestible par les inspecteurs.

C1

Bien que [clause], [noun] reste incomestible.

Bien qu'il soit cuit, ce bois reste incomestible.

C2

L'incomestibilité de [noun] s'explique par [scientific reason].

L'incomestibilité de cette plante s'explique par sa teneur en alcaloïdes.

Word Family

Nouns

incomestibilité (the state of being inedible)
comestibilité (the state of being edible)

Verbs

consommer (to consume)
manger (to eat)

Adjectives

comestible (edible)
mangeable (eatable)
immangeable (uneatable)

Related

consommation
estomac
nutrition
toxique
alimentaire

How to Use It

frequency

Common in specific domains like nature, cooking shows, and health warnings, but less common in everyday casual dining talk.

Common Mistakes
  • Using 'incomestible' for a bad-tasting soup. Cette soupe est immangeable.

    Incomestible implies a physical or biological reason it can't be eaten, not just a culinary error.

  • Saying 'une plante incomestible' and 'un fruit incomestibl'. Un fruit incomestible.

    The word always ends in 'e' in the singular, regardless of gender.

  • Using 'incomestible' for undrinkable water. L'eau est non potable.

    While 'incomestible' is sometimes used, 'non potable' is the standard term for water.

  • Pronouncing the 'n' in 'incomestible'. [ɛ̃.kɔ.mɛs.tibl]

    The 'in' should be a nasal vowel, not an 'i' followed by a hard 'n'.

  • Forgetting the 's' in the plural. Ces champignons sont incomestibles.

    Adjectives must agree in number with the noun they modify.

Tips

When in Doubt

In the French countryside, if you aren't 100% sure a plant is 'comestible', always assume it is 'incomestible' until a professional tells you otherwise.

Agreement

Remember to add an 's' for plural nouns: 'des fruits incomestibles'. The pronunciation doesn't change, but the spelling does!

Beyond Food

Use 'indigeste' for boring books or speeches. It's a more common metaphorical use of the 'eating' vocabulary.

Nasal 'In'

Practice the nasal 'in' by saying 'apple' in English but cutting off the sound before your tongue touches the roof of your mouth.

The Pharmacist Trick

If you are in France and go mushroom hunting, remember that pharmacists are your best resource for identifying 'incomestibles'.

Formal Writing

In essays about the environment, 'incomestible' is a strong word to describe the effects of pollution on food sources.

The 'Taste' Rule

If it tastes bad = immangeable. If it makes you sick = incomestible.

Latin Roots

Remembering that 'comestible' comes from the same root as 'consume' can help you link the words in your mind.

Prefix Focus

When listening, focus on the very first syllable. That 'in-' is the only difference between 'safe to eat' and 'dangerous'!

Impropre à la consommation

Learn this phrase alongside 'incomestible' to understand official government warnings in France.

Memorize It

Mnemonic

Think of 'IN-COME-STIBLE'. If it is NOT (IN) allowed to COME onto your table (STIBLE/table), it is incomestible.

Visual Association

Imagine a big red 'X' over a plate of strange, glowing mushrooms. The 'X' stands for 'In-' and the plate for 'Comestible'.

Word Web

danger poison champignon toxique sécurité forêt santé biologie

Challenge

Go to your kitchen and find three items that are 'comestibles' and three items (like soap or bleach) that are 'incomestibles'. Say the sentences out loud.

Word Origin

The word 'incomestible' is formed from the Latin prefix 'in-' (negation) and the Latin adjective 'comestibilis'. The root is 'comestus', the past participle of 'comedere' (to eat up).

Original meaning: In Latin, it literally meant 'that which cannot be eaten up'.

It belongs to the Romance language family, derived from Latin.

Cultural Context

No specific sensitivities, but always use the word seriously when safety is involved.

In English, we often just say 'inedible' or 'poisonous'. 'Incomestible' exists in English but is extremely rare and academic.

The 'Amanite Phalloïde' is the most famous incomestible mushroom in French literature. The movie 'Le Père Noël est une ordure' features a hilarious scene with an 'incomestible' cake called 'Le Doubitchou'. Survival guides by Bear Grylls translated into French frequently use the term.

Practice in Real Life

Real-World Contexts

Foraging for mushrooms

  • Est-ce comestible ?
  • C'est une espèce incomestible.
  • Attention au poison.
  • Demandez au pharmacien.

Food safety and recalls

  • Retrait du marché.
  • Risque d'intoxication.
  • Produit impropre.
  • Ne pas consommer.

Culinary critiques

  • Le plat est raté.
  • C'est immangeable.
  • Trop de sel.
  • Goût affreux.

Science and biology

  • Toxicité naturelle.
  • Défense chimique.
  • Métaux lourds.
  • Analyse de laboratoire.

Environmental issues

  • Pollution de l'eau.
  • Sols contaminés.
  • Écosystème fragile.
  • Ressources perdues.

Conversation Starters

"Savez-vous comment distinguer un champignon comestible d'un incomestible ?"

"Avez-vous déjà mangé quelque chose qui était presque incomestible dans un restaurant ?"

"Pourquoi pensez-vous que certaines plantes sont naturellement incomestibles ?"

"Est-il vrai que les pharmaciens en France identifient les champignons incomestibles ?"

"Quelles sont les baies incomestibles les plus communes dans votre région ?"

Journal Prompts

Décrivez une expérience où vous avez trouvé une plante ou un champignon incomestible dans la nature.

Imaginez un monde où toute la nourriture devient incomestible. Que feriez-vous pour survivre ?

Expliquez pourquoi il est important de respecter les étiquettes 'incomestible' sur les produits ménagers.

Rédigez un court article sur les dangers des champignons incomestibles pour les randonneurs débutants.

Comparez les mots 'incomestible' et 'immangeable' avec des exemples de votre propre vie.

Frequently Asked Questions

10 questions

Not necessarily. While many incomestible things are poisonous (vénéneux), something could be incomestible simply because it is physically impossible to eat, like a piece of metal or a rock, or because it has no nutritional value and is harmful to the digestive tract.

It is better to use 'imbuvable' for drinks. However, in a formal or scientific context, you might hear 'eau incomestible' if the water is contaminated, though 'eau non potable' is the most common term for undrinkable water.

Yes, if food has rotted to the point where it is dangerous to eat, it is 'devenu incomestible'. For food that is just starting to go bad, you might say 'avarié' or 'périmé'.

Think of 'incomestible' as an objective fact (it will hurt you) and 'immangeable' as a subjective opinion or a result of bad cooking (it tastes terrible). A burnt pizza is immangeable; a poisonous mushroom is incomestible.

If the food is just bad, say 'C'est immangeable'. If you think the food is actually dangerous or rotten, you could say 'C'est incomestible', but be prepared for a very serious reaction from the staff!

It is a medium-frequency word. You won't use it every day like 'pain' or 'eau', but you will see it often in nature, on product labels, and in the news regarding food safety.

Yes, you can say 'la chair de cet animal est incomestible' if the meat is toxic or otherwise unfit for humans to eat.

No. Because it ends in 'e', the form 'incomestible' is used for both masculine and feminine singular nouns. Only the plural adds an 's'.

Yes, the noun is 'l'incomestibilité'. For example: 'L'incomestibilité de cette plante est bien connue'.

The opposite is 'comestible', which means edible or safe to eat.

Test Yourself 180 questions

writing

Write a sentence in French using 'incomestible' to describe a mushroom.

Well written! Good try! Check the sample answer below.

Correct! Not quite. Correct answer:
writing

Explain the difference between 'comestible' and 'incomestible' in French.

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writing

Write a short warning sign for a park about toxic berries.

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writing

Describe why a piece of old bread might be incomestible.

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Correct! Not quite. Correct answer:
writing

Use 'rendre' and 'incomestible' in a sentence about pollution.

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writing

Create a sentence using the plural form 'incomestibles'.

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Correct! Not quite. Correct answer:
writing

Write a dialogue between two hikers about a strange fruit.

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writing

Use the word 'déclaré' with 'incomestible'.

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writing

Describe the state of a burnt meal using 'immangeable'.

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writing

Write a sentence using 'strictement incomestible'.

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writing

Explain what a pharmacist does with mushrooms in France.

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writing

Use the noun 'incomestibilité' in a formal sentence.

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writing

Write a sentence about a decorative object that looks like food.

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writing

Describe a survival situation where you need to find food.

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writing

Use 'bien que' (although) with 'incomestible'.

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writing

Write a sentence about a child eating something they shouldn't.

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writing

Use 'impropre à la consommation' in a sentence.

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writing

Describe a science experiment about toxicity.

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writing

Write a sentence using 'totalement incomestible'.

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writing

Compare two mushrooms using 'comestible' and 'incomestible'.

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speaking

Pronounce 'incomestible' clearly.

Read this aloud:

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speaking

Say 'This mushroom is inedible' in French.

Read this aloud:

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speaking

Say 'Watch out, these berries are inedible' in French.

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speaking

Explain to a friend why they shouldn't eat a strange plant.

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speaking

Ask a pharmacist if a mushroom is edible.

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speaking

Describe a bad meal using 'immangeable'.

Read this aloud:

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speaking

Say 'The water is not drinkable' in French.

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speaking

Pronounce the plural 'incomestibles'.

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speaking

Say 'This is a dangerous substance' in French.

Read this aloud:

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speaking

Tell someone that plastic is not food.

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speaking

Say 'The meat has become inedible' in French.

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speaking

Explain the role of a pharmacist in foraging.

Read this aloud:

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speaking

Say 'I think this fruit is inedible' in French.

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speaking

Warn a child about a colorful berry.

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speaking

Say 'The pollution made the fish inedible' in French.

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speaking

Say 'This is strictly forbidden to eat' in French.

Read this aloud:

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speaking

Repeat: 'Un champignon incomestible' three times fast.

Read this aloud:

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speaking

Say 'It looks like a tomato but it's inedible' in French.

Read this aloud:

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speaking

Say 'The milk is spoiled' in French.

Read this aloud:

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speaking

Say 'There are many inedible species' in French.

Read this aloud:

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listening

Listen to the word: [ɛ̃.kɔ.mɛs.tibl]. Is it 'comestible' or 'incomestible'?

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listening

Listen to the sentence: 'Ces fruits sont incomestibles.' Is there one fruit or multiple?

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listening

Identify the adjective in this sentence: 'Le guide a trouvé une plante incomestible.'

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listening

Does the speaker sound worried or happy when saying 'C'est incomestible !'?

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listening

Listen for the reason: 'Le lait est incomestible car il est resté au soleil.' Why is it inedible?

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listening

Listen for the number: 'Il y a deux champignons incomestibles dans le sac.' How many?

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listening

Identify the synonym used: 'Cette viande est avariée, elle est incomestible.'

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listening

Is the speaker talking about a plant or a fish? 'Ce poisson est devenu incomestible.'

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listening

Listen for the authority: 'Le maire a déclaré l'eau incomestible.' Who said it?

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listening

Is the word at the beginning or end? 'Incomestible est le mot pour ce fruit.'

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listening

Listen to the prefix. Is it 'in-', 'un-', or 'non-'? 'Incomestible.'

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listening

Listen for the agreement: 'Des baies incomestibles.' Did you hear an 's' sound? (Trick question, 's' is silent).

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listening

Listen for the tone: 'C'est absolument incomestible !' Is it a strong or weak statement?

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listening

What is being described? 'Cette soupe est immangeable.'

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listening

Listen for the location: 'Dans cette forêt, tout est incomestible.' Where?

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/ 180 correct

Perfect score!

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