At the A1 level, you only need to know 'filtrar' in its most basic, physical sense. Imagine you are in a kitchen. You might use a filter for coffee or water. At this level, think of 'filtrar' as a way to clean something liquid. You can remember it because it looks like the English word 'filter'. Focus on simple sentences like 'Yo filtro el agua' (I filter the water). Don't worry about the more complex meanings like information leaks yet. Just remember that it is a regular verb ending in -ar, so it follows the same pattern as 'hablar' or 'cantar'. You use it when you want to make a liquid pure or when you use a machine that has a filter. It is a useful word for daily life, especially if you are talking about healthy habits or cooking. Practice saying 'filtro el café' in the morning!
At the A2 level, you can start using 'filtrar' for more than just water. You might use it to describe light coming through a window: 'La luz se filtra por la ventana'. Notice the use of 'se' here; it means the light is passing through on its own. You can also use it in a basic tech context, like 'filtrar fotos' on your phone. At this level, you should be comfortable with the present tense and the simple past (preterite). For example, 'Ayer filtré el agua' (Yesterday I filtered the water). You might also encounter the noun 'el filtro'. Many people use 'filtros' on Instagram, so you can say 'Me gusta este filtro'. The verb 'filtrar' is very common when talking about home maintenance, like when water 'se filtra' (leaks) through a wall or roof because of rain. This is a very practical use of the word for A2 learners.
As a B1 learner, you should be able to use 'filtrar' in both physical and abstract contexts. This is the level where the 'information leak' meaning becomes important. You will often read in the news that 'se filtró información confidencial' (confidential information was leaked). You should also understand how to use 'filtrar' in a professional or academic environment, such as 'filtrar los resultados de una búsqueda' (filter search results) or 'filtrar a los candidatos para un puesto' (screen candidates for a job). You should be aware of the difference between 'filtrar' (to filter) and 'colar' (to strain), using 'colar' for kitchen tasks like pasta and 'filtrar' for more technical or delicate processes. You should also be able to use the verb in different tenses, including the subjunctive: 'Espero que no se filtre la noticia' (I hope the news doesn't leak).
At the B2 level, you should have a nuanced understanding of 'filtrar'. You can use it to describe complex processes in science, politics, and technology. You should be familiar with related nouns like 'filtración', which can mean both the physical process of filtration and a journalistic leak. You can use 'filtrar' to discuss social issues, such as how certain groups are 'filtrados' (filtered/screened) by systems of power. You should also be able to use it metaphorically in literature or descriptive writing, for example, describing how sound 'se filtra' through a crowd. Your use of the pronominal 'filtrarse' should be natural, and you should understand the subtle difference between 'filtrar' and synonyms like 'cribar' or 'depurar'. In a business context, you might talk about 'filtrar el ruido' (filtering out the noise) to focus on what's important, showing a high level of metaphorical fluency.
At the C1 level, you use 'filtrar' with precision and stylistic flair. You understand its role in sophisticated discourse, such as discussing the 'filtración de datos' (data breaches) in the context of cybersecurity or 'la filtración de la ideología' (the seeping of ideology) into public discourse. You can use the word to describe subtle sensory experiences, like how a specific emotion 'se filtra' into a person's voice. You are comfortable with all its derived forms and can use them in complex grammatical structures, including the passive voice or complex conditional sentences. You might analyze how a text 'filtra' certain perspectives, implying a biased selection of information. Your vocabulary is rich enough to choose 'filtrar' over 'colar' or 'pasar' to convey a specific technical or refined meaning, and you can discuss the etymological connection to 'fieltro' (felt) and how that history informs the word's current meaning.
At the C2 level, 'filtrar' is a tool for precise and evocative communication. You can use it to deconstruct how information is managed in society, using terms like 'filtros de burbuja' (filter bubbles) in social media analysis. You might use it in philosophical discussions about how our senses 'filtran' reality, or in literary criticism to describe a narrator's 'mirada filtrada' (filtered gaze). You have a complete grasp of the word's polysemy and can use it in highly formal academic writing or in creative, poetic contexts with equal ease. You understand the historical development of the word and its cognates across other Romance languages. For a C2 speaker, 'filtrar' is not just a verb; it is a concept that describes the fundamental human and natural process of selection, purification, and the inevitable failure of barriers (leaks). You can use it to express the most subtle nuances of movement, change, and revelation.

filtrar in 30 Seconds

  • Filtrar means to pass a fluid through a filter to purify it or separate components.
  • It is widely used for 'leaking' information or secrets to the public or press.
  • In technology, it refers to sorting or screening data, emails, or search results.
  • It can be used reflexively (filtrarse) for spontaneous leaks of light, water, or news.

The Spanish verb filtrar is a versatile term that translates primarily to 'to filter' in English. At its most basic level, it describes the physical process of passing a substance, usually a liquid or a gas, through a porous material to remove impurities or separate components. However, its usage extends far beyond the kitchen or the laboratory. In modern Spanish, it is frequently employed in technical, journalistic, and social contexts. For instance, when a secret document is leaked to the press, we say the information has been 'filtrada'. When light passes through a semi-opaque curtain, it is 'filtrada'. Even in the digital world, when we use an algorithm to sort through thousands of emails to find specific keywords, we are 'filtrando'. Understanding this word requires grasping both its literal, mechanical roots and its metaphorical, abstract applications.

Physical Context
Used when talking about water purification, making coffee, or industrial processes where solids are separated from fluids. It implies a cleaning or refining process.

Es fundamental filtrar el agua del grifo si vives en esta zona para eliminar el exceso de cal.

Informational Context
Refers to the act of leaking confidential data or news to the public. This is often used in politics and business journalism.

Alguien en el ministerio decidió filtrar los documentos comprometedores a la prensa nacional.

In the realm of technology, 'filtrar' is the go-to verb for data processing. When you use Excel or a database, you 'filtras' the results to see only what is relevant. This concept of selection is key. To filter is not just to clean; it is to select based on specific criteria. Whether you are filtering candidates for a job or filtering blue light with your glasses, you are exercising a form of control over what passes through a barrier. This makes it a powerful word in professional environments where precision and selection are paramount. The word evokes a sense of refinement, where the 'unwanted' is left behind and only the 'pure' or 'relevant' remains.

Environmental Context
Used to describe natural processes, such as the earth filtering rainwater as it descends into aquifers.

Las capas de arena y grava ayudan a filtrar naturalmente los sedimentos del río.

La luz del atardecer se suele filtrar a través de las hojas de los árboles, creando sombras suaves.

Grammatically, filtrar is a regular '-ar' verb, making its conjugation straightforward for most learners. However, its syntactic behavior changes depending on whether it is used transitively (someone filters something) or reflexively (something leaks). When you are the agent performing the action, like filtering coffee, you use the active form: 'Yo filtro el café'. When you want to describe a leak where the agent is unknown or the process is spontaneous, you use the pronominal form 'filtrarse'. For example, 'El agua se filtra por el techo' (The water is leaking/seeping through the ceiling). This distinction is vital for achieving a natural-sounding Spanish.

Transitive Usage (Active)
Subject + Filtrar + Direct Object. Used for intentional actions like purifying water or sorting data.

Debemos filtrar todas las solicitudes antes de llamar a los candidatos para la entrevista.

Pronominal Usage (Reflexive)
Subject + Se + Filtrar. Used for leaks, seeping, or information becoming public without a specified leaker.

La noticia de su renuncia se filtró antes del anuncio oficial.

In professional settings, you will often encounter 'filtrar' in the imperative or as a gerund. For example, a manager might say, 'Sigue filtrando esos datos hasta que encuentres el error'. Here, it implies a continuous, meticulous process of scrutiny. Another common construction is the use of 'filtrar' with prepositional phrases like 'a través de' (through). This is common in descriptive writing: 'La luz se filtraba a través de las persianas'. This paints a vivid picture of light being broken up or softened by an obstacle. In scientific Spanish, 'filtrar' is often paired with specific instruments: 'filtrar al vacío' (to vacuum filter) or 'filtrar por gravedad' (to gravity filter).

Si quieres resultados precisos, tienes que filtrar la mezcla usando un papel de poro fino.

No dejes que se filtre ni un solo detalle del proyecto a la competencia.

In daily life in Spanish-speaking countries, you will hear filtrar in several distinct 'ecosystems'. The first is the home. If you are in a kitchen in Mexico, Spain, or Argentina, someone might talk about 'filtrar el café' (though 'colar' is also common). If there's a problem with the plumbing, a neighbor might complain that 'se está filtrando agua' into their apartment. This use of 'filtrar' conveys a sense of slow, unwanted movement of liquid. It's a word that signals a problem that needs fixing, often associated with dampness (humedad) and leaks (goteras).

The News Cycle
Journalists use 'filtrar' constantly. Headlines like 'Se filtran los audios del presidente' are standard. In this context, it implies a breach of trust or a whistleblowing event.

La prensa logró filtrar el informe secreto antes de que el gobierno lo publicara.

The second ecosystem is the modern workplace, especially in tech and HR. If you work in an office, you'll hear 'Tenemos que filtrar estos correos' or 'Hay que filtrar a los candidatos por su experiencia'. Here, 'filtrar' is synonymous with 'screening' or 'sorting'. It is a professional action aimed at efficiency. In the world of social media, 'filtrar' is also related to 'filtros' (filters) on Instagram or TikTok. While the verb for applying a filter is often 'poner un filtro', you might hear people discuss how the app 'filtra' the image to change its colors or appearance.

El software está diseñado para filtrar automáticamente el contenido inapropiado.

Finally, in more poetic or literary settings, 'filtrar' describes the movement of light and sound. A novelist might write about how the music 'se filtraba' through the walls of a nightclub, or how the moonlight 'se filtraba' through the branches of a dark forest. This usage is more evocative and sensory, focusing on the quality of the light or sound as it is altered by its passage through a medium. It suggests a softening or a partial obscuring, creating a specific atmosphere.

La luz del sol se filtraba tímidamente por las rendijas de la vieja persiana de madera.

Es imposible filtrar todo el ruido de la calle sin ventanas de doble acristalamiento.

One of the most common mistakes English speakers make with filtrar is confusing it with other verbs of separation like 'colar' or 'cribar'. While they are related, they are not always interchangeable. 'Colar' is the word you use most often in the kitchen for straining pasta or making coffee (colar el café). While 'filtrar el café' is correct and understood, 'colar' sounds more natural in a domestic setting. Using 'filtrar' for pasta would sound very strange; you 'cuelas' the pasta to remove the water. 'Filtrar' implies a much finer process, often involving a membrane or a sophisticated system.

Mistake: Using 'filtrar' for coarse straining
Incorrect: 'Voy a filtrar los espaguetis'. Correct: 'Voy a colar los espaguetis'.

Another error involves the reflexive 'se'. Learners often forget to use 'se' when the action is passive or spontaneous. If you say 'El agua filtra la pared', you are saying the water is actively filtering the wall (as if the water had a filter and was cleaning the wall). To say the water is leaking through the wall, you must say 'El agua se filtra por la pared'. The 'se' indicates that the water is the thing passing through, not the thing doing the filtering of another substance. This is a subtle but important distinction for B1 learners to master.

No digas 'La información filtró', di 'La información se filtró'.

There is also a confusion between 'filtrar' and 'cribar'. 'Cribar' (to sieve or sift) is used for solid particles, like sifting flour or sand. If you are separating stones from dirt, you 'cribas'. If you are removing impurities from a liquid, you 'filtras'. In a metaphorical sense, 'cribar' is often used for a very intense selection process (like 'cribar' candidates for a high-level job), whereas 'filtrar' might be used for a more general sorting. Finally, be careful with the English 'leak'. While 'leak' can mean 'filtrar' (information) or 'gotear' (a faucet), 'filtrar' is never used for a dripping tap. For a tap, use 'gotear'.

El grifo gotea (The tap leaks/drips), pero el agua se filtra por la grieta (The water seeps through the crack).

To truly master filtrar, you should know its neighbors in the Spanish lexicon. Depending on the level of formality and the specific context, you might choose a different word to express a similar idea. For example, in a scientific or highly formal context, you might use depurar. This verb means to purify or to debug (in computing). While 'filtrar' is the process, 'depurar' is the goal: to make something pure or error-free. You 'filtras' the water to 'depurarla'.

Filtrar vs. Colar
'Colar' is for everyday kitchen use (straining). 'Filtrar' is for finer, more technical, or metaphorical processes (information, light, data).
Filtrar vs. Tamizar
'Tamizar' is 'to sift' (like flour). It is used for dry solids. 'Filtrar' is primarily for fluids or abstract concepts.

Another interesting alternative is trascender. When a secret 'se filtra', it becomes known. You could also say the news 'trascendió' (transcended the private sphere to become public). 'Trascender' is more formal and poetic. If you are talking about light, you might use tamizar metaphorically to describe light that is softened: 'luz tamizada'. This is a very common expression in interior design and photography to describe light that has been filtered through a screen or thin fabric.

La empresa necesita depurar su base de datos para eliminar registros duplicados.

La noticia de la fusión trascendió a pesar de los esfuerzos por mantenerla en secreto.

In the context of social groups or organizations, you might hear infiltrar. This is a related word that means 'to infiltrate'. While 'filtrar' is the movement of something out (a leak), 'infiltrar' is the movement of someone or something into a place where they aren't supposed to be, like a spy 'infiltrándose' in an organization. Both share the same root, emphasizing the idea of passing through a barrier or boundary that is meant to be secure.

How Formal Is It?

Formal

"Se procedió a filtrar la solución química."

Neutral

"Hay que filtrar el agua antes de beberla."

Informal

"Se filtró todo el chisme de la fiesta."

Child friendly

"Este colador ayuda a filtrar las piedritas."

Slang

"Ese tipo no filtra nada, suelta todo."

Fun Fact

The word is related to 'felt' because early filters were often made of thick pieces of wool or felt.

Pronunciation Guide

UK /filˈtɾaɾ/
US /filˈtɾɑɹ/
The stress is on the last syllable: fil-TRAR.
Rhymes With
cantar hablar mirar llegar pasar dar estar mar
Common Errors
  • Pronouncing the 'i' like the English 'i' in 'filter' (it should be 'ee').
  • Using an English 'r' sound instead of the Spanish tap.
  • Aspirating the 't' (it should be soft and dental).

Difficulty Rating

Reading 2/5

Easy to recognize as a cognate of 'filter'.

Writing 3/5

Requires understanding of the reflexive 'se' for leaks.

Speaking 3/5

The 'tr' cluster and final 'r' require some practice.

Listening 2/5

Clearly pronounced in most dialects.

What to Learn Next

Prerequisites

agua limpiar pasar secreto luz

Learn Next

depurar tamizar cribar infiltrar gotear

Advanced

ósmosis porosidad permeabilidad transcendencia

Grammar to Know

Regular -ar verb conjugation

Yo filtro, tú filtras, él filtra.

Reflexive 'se' for accidental/spontaneous actions

El secreto se filtró (The secret leaked).

Passive 'se' for impersonal statements

Se filtran los datos automáticamente.

Subjunctive after verbs of emotion/desire

Temo que se filtre la información.

Preposition 'por' for criteria

Filtrar por nombre.

Examples by Level

1

Necesito filtrar el agua.

I need to filter the water.

Simple present infinitive after 'necesito'.

2

Él filtra el café por la mañana.

He filters the coffee in the morning.

Third person singular present tense.

3

Nosotros filtramos el jugo.

We filter the juice.

First person plural present tense.

4

¿Puedes filtrar el agua, por favor?

Can you filter the water, please?

Question using 'poder' + infinitive.

5

Ella no filtra el agua.

She does not filter the water.

Negative sentence in present tense.

6

Ellos filtran el aire en la oficina.

They filter the air in the office.

Third person plural present tense.

7

Yo quiero filtrar este líquido.

I want to filter this liquid.

Verb 'querer' + infinitive.

8

Usted filtra el té muy bien.

You filter the tea very well.

Formal 'usted' present tense.

1

La luz se filtra por la ventana.

The light filters through the window.

Reflexive 'se' for spontaneous action.

2

Ayer filtré toda la información.

Yesterday I filtered all the information.

First person singular preterite.

3

El agua se filtró por el techo ayer.

Water leaked through the ceiling yesterday.

Reflexive preterite for a leak.

4

Estamos filtrando los correos ahora.

We are filtering the emails now.

Present progressive 'estar' + gerund.

5

Tienes que filtrar las fotos antes de enviarlas.

You have to filter the photos before sending them.

Periphrasis 'tener que' + infinitive.

6

El filtro dejó de filtrar bien.

The filter stopped filtering well.

Verb 'dejar de' + infinitive.

7

Ella filtraba el agua cada noche.

She used to filter the water every night.

Imperfect tense for habitual action.

8

No filtres el aceite caliente.

Don't filter the hot oil.

Negative informal imperative (tú).

1

Se filtró un documento muy importante a la prensa.

A very important document was leaked to the press.

Passive 'se' construction for news leaks.

2

Es necesario filtrar los candidatos por su experiencia.

It is necessary to screen the candidates by their experience.

Impersonal 'es necesario' + infinitive.

3

El gobierno intentó evitar que se filtrara la noticia.

The government tried to prevent the news from leaking.

Imperfect subjunctive after 'evitar que'.

4

Si filtras los datos, encontrarás el error fácilmente.

If you filter the data, you will find the error easily.

First conditional sentence (Si + present, future).

5

Hemos filtrado el aire para eliminar el polen.

We have filtered the air to remove the pollen.

Present perfect tense.

6

La empresa está filtrando las llamadas comerciales.

The company is screening commercial calls.

Gerund showing ongoing action.

7

Me gustaría que filtraras esta lista de nombres.

I would like you to filter this list of names.

Imperfect subjunctive after 'me gustaría que'.

8

El agua se filtra lentamente a través de la arena.

The water filters slowly through the sand.

Reflexive present with an adverb.

1

La luz del sol se filtraba entre las hojas de los árboles.

The sunlight was filtering through the leaves of the trees.

Imperfect tense for descriptive background.

2

No permitas que se filtre ninguna información personal.

Do not allow any personal information to be leaked.

Negative imperative + subjunctive.

3

Habían filtrado los resultados antes de la reunión oficial.

They had leaked the results before the official meeting.

Past perfect (pluperfect) tense.

4

El sistema filtra el spam de manera muy eficiente.

The system filters spam very efficiently.

Present tense describing a technical function.

5

Al filtrar la mezcla, obtuvimos un residuo sólido.

By filtering the mixture, we obtained a solid residue.

Gerund ('Al' + infinitive) used as 'By doing'.

6

Se han filtrado rumores sobre la posible quiebra.

Rumors about the possible bankruptcy have been leaked.

Present perfect with passive 'se'.

7

Es vital filtrar el ruido mediático para entender la verdad.

It is vital to filter out the media noise to understand the truth.

Metaphorical use of 'filtrar'.

8

El tejido filtra los rayos UV protegiendo la piel.

The fabric filters UV rays, protecting the skin.

Scientific/functional present tense.

1

La ideología dominante se filtra en todos los aspectos de la vida cotidiana.

The dominant ideology seeps into all aspects of daily life.

Metaphorical use for abstract concepts.

2

Habiéndose filtrado el plan, la operación tuvo que ser cancelada.

The plan having been leaked, the operation had to be canceled.

Compound gerund with reflexive 'se' in an absolute clause.

3

El autor filtra su visión del mundo a través de sus personajes.

The author filters his world view through his characters.

Literary analysis usage.

4

Es imperativo que filtremos los datos con un rigor estadístico extremo.

It is imperative that we filter the data with extreme statistical rigor.

Present subjunctive with formal expression.

5

La música se filtraba tenuemente desde el piso de arriba.

The music was faintly leaking from the floor above.

Adverbial use for sensory description.

6

La filtración de estas grabaciones ha provocado una crisis institucional.

The leaking of these recordings has caused an institutional crisis.

Noun form 'filtración' as the subject.

7

No debemos filtrar la realidad para que se ajuste a nuestros prejuicios.

We must not filter reality to fit our prejudices.

Philosophical/metaphorical usage.

8

El agua de lluvia se filtra por las rocas calcáreas formando cuevas.

Rainwater seeps through limestone rocks, forming caves.

Geological/technical description.

1

El algoritmo filtra la información basándose en patrones de comportamiento previos.

The algorithm filters information based on previous behavior patterns.

High-level technical description.

2

La melancolía se filtraba en su prosa con una sutileza casi imperceptible.

Melancholy seeped into his prose with an almost imperceptible subtlety.

Advanced literary description.

3

Se especula que la información fue filtrada deliberadamente para desestabilizar el mercado.

It is speculated that the information was deliberately leaked to destabilize the market.

Passive voice with 'se' and past participle.

4

La porosidad de las fronteras permite que se filtren mercancías ilegales.

The porosity of the borders allows illegal goods to seep through.

Sociopolitical metaphorical usage.

5

El pensamiento crítico actúa como un tamiz que filtra las falacias del discurso.

Critical thinking acts as a sieve that filters the fallacies of the discourse.

Complex metaphor using 'tamiz' and 'filtrar'.

6

Bajo la apariencia de neutralidad, el medio filtra las noticias que no convienen a sus intereses.

Under the appearance of neutrality, the media outlet filters news that does not suit its interests.

Sophisticated critique of media bias.

7

La luz, filtrada por el vitral, bañaba la nave de la catedral en tonos púrpura.

The light, filtered by the stained glass, bathed the cathedral nave in purple tones.

Participial phrase used as an adjective.

8

Resulta inquietante cómo se filtran los sesgos cognitivos en nuestras decisiones más racionales.

It is unsettling how cognitive biases seep into our most rational decisions.

Psychological/philosophical inquiry.

Common Collocations

filtrar el agua
filtrar información
filtrar datos
filtrar a los candidatos
filtrar la luz
filtrar el aire
filtrar por categorías
filtrar el contenido
filtrar el aceite
filtrar los resultados

Common Phrases

filtrar una noticia

— To leak a piece of news to the public.

Alguien decidió filtrar una noticia falsa.

filtrar los correos

— To sort through emails to find specific ones.

Tengo que filtrar los correos de ayer.

filtrar el café

— To make drip coffee or strain grounds.

Me gusta filtrar el café a mano.

filtrarse el agua

— For water to seep or leak through a surface.

Se filtra el agua por la ventana.

filtrarse un secreto

— For a secret to become known unintentionally.

Se filtró el secreto de la fiesta.

papel de filtrar

— Filter paper used in labs or kitchens.

No me queda papel de filtrar para el café.

capacidad de filtrar

— The ability of a system to sort or clean.

Este riñón tiene poca capacidad de filtrar.

filtrar por precio

— To sort items based on their cost.

En la web puedes filtrar por precio.

filtrar el spam

— To block unwanted commercial emails.

Mi cuenta filtra el spam automáticamente.

filtrar las impurezas

— To remove dirty elements from a substance.

El carbón ayuda a filtrar las impurezas.

Often Confused With

filtrar vs colar

Colar is for kitchen straining; filtrar is for finer or abstract filtering.

filtrar vs cribar

Cribar is for sifting solids (sand/flour); filtrar is for fluids.

filtrar vs gotear

Gotear is for a dripping leak; filtrar is for seeping through a surface.

Idioms & Expressions

"filtrar hasta el último detalle"

— To scrutinize something very thoroughly.

El abogado filtró hasta el último detalle del contrato.

neutral
"no filtrar nada"

— To have no social filter; to say everything you think.

Juan no filtra nada, es demasiado sincero.

informal
"filtrar las palabras"

— To think carefully before speaking.

Deberías filtrar tus palabras antes de hablar con el jefe.

neutral
"filtrarse como la humedad"

— Something that spreads slowly and is hard to stop.

Esa idea se filtró como la humedad en la sociedad.

literary
"ser un colador"

— Related idiom: To be very leaky (information) or bad at defense (sports).

Nuestra defensa es un colador, se filtra todo.

informal
"filtrar a cuentagotas"

— To release information very slowly and selectively.

El estudio está filtrando los resultados a cuentagotas.

journalistic
"un filtro de seguridad"

— A security checkpoint or screening process.

Pasamos el filtro de seguridad del aeropuerto.

neutral
"filtrar por el tamiz de..."

— To analyze something through a specific lens or perspective.

Él filtra todo por el tamiz de su religión.

academic
"filtrar el grano de la paja"

— Similar to 'separate the wheat from the chaff'.

Hay que filtrar el grano de la paja en este informe.

neutral
"filtrarse en las filas"

— To infiltrate a group or organization.

El espía logró filtrarse en las filas enemigas.

formal

Easily Confused

filtrar vs Infiltrar

Same root.

Filtrar is to let out/clean; Infiltrar is to go in secretly.

El espía se infiltró en el edificio.

filtrar vs Tamizar

Both mean to sift/filter.

Tamizar is mostly for dry powders or metaphorical light.

Tamiza el azúcar antes de decorar.

filtrar vs Depurar

Both imply cleaning.

Depurar is more formal and used for systems, data, or water treatment plants.

La planta depura el agua de la ciudad.

filtrar vs Escurrir

Related to liquids.

Escurrir is to drain or wring out.

Escurre la ropa después de lavarla.

filtrar vs Trascender

Used for news leaking.

Trascender means to become public knowledge, often used formally.

La crisis trascendió las fronteras.

Sentence Patterns

A1

Sujeto + filtrar + Sustantivo

Yo filtro el agua.

A2

Sustantivo + se filtra + por + Lugar

La luz se filtra por la ventana.

B1

Sujeto + filtrar + Sustantivo + por + Criterio

Él filtra los datos por fecha.

B2

Se + filtró + Sustantivo + a + Receptor

Se filtró el informe a la prensa.

C1

Haber + filtrado + Sustantivo

Habiendo filtrado la información, el daño estaba hecho.

C2

Sustantivo + actúa como + filtro

La educación actúa como un filtro social.

B1

Es necesario + filtrar + Sustantivo

Es necesario filtrar los resultados.

B2

No dejar + que se filtre + Sustantivo

No dejes que se filtre el agua.

Word Family

Nouns

Verbs

Adjectives

Related

How to Use It

frequency

High, especially in news and tech.

Common Mistakes
  • El agua filtra la pared. El agua se filtra por la pared.

    Without 'se', it sounds like the water is actively cleaning the wall.

  • Voy a filtrar la pasta. Voy a colar la pasta.

    Pasta is too large for 'filtrar'; use 'colar' for kitchen straining.

  • La noticia filtró ayer. La noticia se filtró ayer.

    Information leaks require the reflexive 'se'.

  • El grifo se filtra. El grifo gotea.

    A dripping tap is 'gotear', not 'filtrar'.

  • Filtrar la arena con un tamiz. Tamizar la arena.

    For dry solids like sand, 'tamizar' or 'cribar' is more appropriate.

Tips

Reflexive Use

Always use 'se' when the subject is the thing being leaked (e.g., 'el agua se filtra').

Coffee Talk

You can say 'café de filtro' for drip coffee, but 'colar el café' is also very common.

Media Literacy

When you see 'filtración' in a headline, it almost always means a political or corporate leak.

Digital Sorting

In apps, look for the 'Filtrar' button to narrow down your search results.

The Dental T

Make sure your tongue touches your upper teeth when pronouncing the 't' in 'filtrar'.

Social Filters

Use 'no tiene filtro' to describe someone who is bluntly honest.

Lab Use

In chemistry, 'filtrar' is the standard term for separation of phases.

Maintenance

If you have 'humedad' (dampness), check if water 'se está filtrando' from somewhere.

Fine vs Coarse

Use 'filtrar' for microscopic or very small particles, 'colar' for larger ones.

Felt Roots

Remember the word 'fieltro' (felt) to help you remember 'filtrar'.

Memorize It

Mnemonic

Think of a 'Filter' for 'Filtrar'. They sound almost identical, making it one of the easiest cognates in Spanish.

Visual Association

Imagine a coffee filter catching the grounds while the pure coffee drips through. This is 'filtrar'.

Word Web

agua café información secreto datos luz aire prensa

Challenge

Try to use 'filtrar' in three different ways today: once for a liquid, once for data, and once for news.

Word Origin

From the Medieval Latin 'filtrāre', which comes from 'filtrum' meaning 'felt' (fieltro in Spanish).

Original meaning: To pass something through felt to strain it.

Romance (Latin root).

Cultural Context

Be careful when using 'filtrar' in a business context; it can imply a security breach if not used carefully.

English speakers use 'filter' similarly, but 'leak' is more common for news. In Spanish, 'filtrar' covers both.

WikiLeaks is often discussed as 'las filtraciones de WikiLeaks' in Spanish media. The movie 'The Post' deals with 'filtrar documentos'. Instagram filters are universally called 'filtros'.

Practice in Real Life

Real-World Contexts

Cooking

  • filtrar el café
  • filtrar el caldo
  • usar un filtro
  • colar las impurezas

Technology

  • filtrar por fecha
  • filtrar el spam
  • algoritmo de filtrado
  • filtrar la búsqueda

Journalism

  • filtrar documentos
  • una filtración anónima
  • se filtró a la prensa
  • filtrar la verdad

Home Maintenance

  • se filtra agua
  • humedad por filtración
  • reparar la filtración
  • filtrar el aire

Human Resources

  • filtrar currículums
  • proceso de filtrado
  • filtrar por idiomas
  • filtrar candidatos

Conversation Starters

"¿Crees que es necesario filtrar el agua del grifo en esta ciudad?"

"¿Qué haces para filtrar los correos electrónicos no deseados?"

"¿Has oído sobre la última noticia que se filtró a la prensa?"

"¿Prefieres el café de filtro o el café expreso?"

"¿Te parece bien que las empresas filtren a los candidatos por sus redes sociales?"

Journal Prompts

Describe un momento en el que se filtró un secreto tuyo. ¿Cómo te sentiste?

¿Cómo filtras la información que recibes en las redes sociales para evitar noticias falsas?

Escribe sobre la importancia de filtrar el agua en el mundo actual.

Imagina que eres un periodista y recibes una filtración importante. ¿Qué harías?

¿Qué 'filtros' crees que usamos los humanos para ver la realidad?

Frequently Asked Questions

10 questions

No, es mejor decir 'colar los espaguetis'. 'Filtrar' se usa para cosas más finas como el agua o el café.

'Filtrar' es la acción activa de alguien limpiando algo. 'Se filtró' indica que algo salió a la luz o pasó por un lugar de forma accidental o sin un agente claro.

Sí, muchísimo. Se usa para filtrar datos, correos, búsquedas y spam.

Depende. Si es una noticia, es 'filtrar'. Si es un grifo que gotea, es 'gotear'. Si es agua pasando por una pared, es 'filtrarse'.

Es el papel especial que se usa en las cafeteras o en laboratorios para separar sólidos de líquidos.

Sí, es totalmente regular en todos sus tiempos.

Sí, 'la luz se filtra por las cortinas' es una frase muy común y correcta.

Se refiere a una persona que dice todo lo que piensa sin considerar si es apropiado o no.

Los sustantivos principales son 'el filtro' (el objeto) y 'la filtración' (el proceso o el leak).

Sí, en contextos de selección como 'filtrar candidatos' para un trabajo.

Test Yourself 200 questions

writing

Write: 'I filter the water.'

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

Correct! Not quite. Correct answer:
writing

Write: 'The light filters through the window.'

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

Correct! Not quite. Correct answer:
writing

Write: 'The news was leaked to the press.'

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

Correct! Not quite. Correct answer:
writing

Write: 'We are filtering the data by date.'

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

Correct! Not quite. Correct answer:
writing

Write: 'The leak of information caused a crisis.'

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

Correct! Not quite. Correct answer:
writing

Write: 'The author filters reality through his experiences.'

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

Correct! Not quite. Correct answer:
writing

Write: 'He filters the coffee.'

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

Correct! Not quite. Correct answer:
writing

Write: 'Yesterday I filtered the emails.'

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

Correct! Not quite. Correct answer:
writing

Write: 'It is important to filter the candidates.'

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

Correct! Not quite. Correct answer:
writing

Write: 'Don't let the secret leak.'

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

Correct! Not quite. Correct answer:
writing

Write: 'Water seeps through the rocks.'

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

Correct! Not quite. Correct answer:
writing

Write: 'Critical thinking filters the fallacies.'

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

Correct! Not quite. Correct answer:
writing

Write: 'Can you filter the juice?'

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

Correct! Not quite. Correct answer:
writing

Write: 'Water is leaking through the ceiling.'

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

Correct! Not quite. Correct answer:
writing

Write: 'We will filter the results tomorrow.'

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

Correct! Not quite. Correct answer:
writing

Write: 'They had leaked the audios.'

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

Correct! Not quite. Correct answer:
writing

Write: 'The music was leaking from the street.'

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

Correct! Not quite. Correct answer:
writing

Write: 'Ideology seeps into everyday life.'

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

Correct! Not quite. Correct answer:
writing

Write: 'They filter the air.'

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

Correct! Not quite. Correct answer:
writing

Write: 'I hope it doesn't leak.'

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

Correct! Not quite. Correct answer:
speaking

Di: 'Yo filtro el café'.

Read this aloud:

Correct! Not quite. Correct answer:
speaking

Di: 'La luz se filtra'.

Read this aloud:

Correct! Not quite. Correct answer:
speaking

Di: 'Se filtró la noticia'.

Read this aloud:

Correct! Not quite. Correct answer:
speaking

Di: 'Filtra los datos por favor'.

Read this aloud:

Correct! Not quite. Correct answer:
speaking

Di: 'La filtración fue un éxito'.

Read this aloud:

Correct! Not quite. Correct answer:
speaking

Di: 'El sesgo se filtra en la decisión'.

Read this aloud:

Correct! Not quite. Correct answer:
speaking

Di: 'Filtro el agua'.

Read this aloud:

Correct! Not quite. Correct answer:
speaking

Di: 'Ayer filtré el aire'.

Read this aloud:

Correct! Not quite. Correct answer:
speaking

Di: 'No filtres mi secreto'.

Read this aloud:

Correct! Not quite. Correct answer:
speaking

Di: 'Estamos filtrando spam'.

Read this aloud:

Correct! Not quite. Correct answer:
speaking

Di: 'La música se filtraba'.

Read this aloud:

Correct! Not quite. Correct answer:
speaking

Di: 'Filtrar el grano de la paja'.

Read this aloud:

Correct! Not quite. Correct answer:
speaking

Di: 'Ellos filtran jugo'.

Read this aloud:

Correct! Not quite. Correct answer:
speaking

Di: '¿Filtraste las fotos?'.

Read this aloud:

Correct! Not quite. Correct answer:
speaking

Di: 'Espero que no se filtre'.

Read this aloud:

Correct! Not quite. Correct answer:
speaking

Di: 'Habían filtrado todo'.

Read this aloud:

Correct! Not quite. Correct answer:
speaking

Di: 'La realidad filtrada'.

Read this aloud:

Correct! Not quite. Correct answer:
speaking

Di: 'El algoritmo filtra'.

Read this aloud:

Correct! Not quite. Correct answer:
speaking

Di: 'Filtramos café'.

Read this aloud:

Correct! Not quite. Correct answer:
speaking

Di: 'Filtra por precio'.

Read this aloud:

Correct! Not quite. Correct answer:
listening

Escucha: 'Filtro el agua'. ¿Qué hago?

Correct! Not quite. Correct answer:
Correct! Not quite. Correct answer:
listening

Escucha: 'La luz se filtra'. ¿Qué pasa con la luz?

Correct! Not quite. Correct answer:
Correct! Not quite. Correct answer:
listening

Escucha: 'Se filtró el documento'. ¿Qué pasó?

Correct! Not quite. Correct answer:
Correct! Not quite. Correct answer:
listening

Escucha: 'Filtra los correos'. ¿Qué debes hacer?

Correct! Not quite. Correct answer:
Correct! Not quite. Correct answer:
listening

Escucha: 'La filtración es masiva'. ¿Cómo es la filtración?

Correct! Not quite. Correct answer:
Correct! Not quite. Correct answer:
listening

Escucha: 'El sesgo se filtra'. ¿Qué se filtra?

Correct! Not quite. Correct answer:
Correct! Not quite. Correct answer:
listening

Escucha: '¿Filtramos el café?'. ¿Es una propuesta?

Correct! Not quite. Correct answer:
Correct! Not quite. Correct answer:
listening

Escucha: 'Ayer filtré todo'. ¿Cuándo?

Correct! Not quite. Correct answer:
Correct! Not quite. Correct answer:
listening

Escucha: 'No dejes que se filtre'. ¿Es una orden?

Correct! Not quite. Correct answer:
Correct! Not quite. Correct answer:
listening

Escucha: 'Estamos filtrando'. ¿Es ahora?

Correct! Not quite. Correct answer:
Correct! Not quite. Correct answer:
listening

Escucha: 'Música filtrada'. ¿Cómo es la música?

Correct! Not quite. Correct answer:
Correct! Not quite. Correct answer:
listening

Escucha: 'El tamiz filtra'. ¿Qué hace el tamiz?

Correct! Not quite. Correct answer:
Correct! Not quite. Correct answer:
listening

Escucha: 'Él filtra'. ¿Quién?

Correct! Not quite. Correct answer:
Correct! Not quite. Correct answer:
listening

Escucha: 'Filtra por fecha'. ¿Cuál es el criterio?

Correct! Not quite. Correct answer:
Correct! Not quite. Correct answer:
listening

Escucha: 'Habían filtrado'. ¿Es pasado?

Correct! Not quite. Correct answer:
Correct! Not quite. Correct answer:
error correction

El agua filtra la pared.

Correct! Not quite. Correct answer: El agua se filtra por la pared.
error correction

Voy a filtrar los espaguetis.

Correct! Not quite. Correct answer: Voy a colar los espaguetis.
error correction

La noticia filtró ayer.

Correct! Not quite. Correct answer: La noticia se filtró ayer.
error correction

No dejes que se filtrara el agua.

Correct! Not quite. Correct answer: No dejes que se filtre el agua.
error correction

La filtrado de datos es mala.

Correct! Not quite. Correct answer: La filtración de datos es mala.
error correction

El grifo se filtra.

Correct! Not quite. Correct answer: El grifo gotea.
error correction

Filtramos por el precio.

Correct! Not quite. Correct answer: Filtramos por precio.
error correction

Estamos filtrado.

Correct! Not quite. Correct answer: Estamos filtrando.
error correction

El algoritmo filtran todo.

Correct! Not quite. Correct answer: El algoritmo filtra todo.
error correction

Yo filtran el café.

Correct! Not quite. Correct answer: Yo filtro el café.

/ 200 correct

Perfect score!

Was this helpful?

Comments (0)

Login to Comment
No comments yet. Be the first to share your thoughts!