At the A1 level, 'kasif kardan' is taught as a basic action verb related to daily life and hygiene. Learners focus on the literal meaning: making physical objects dirty. The emphasis is on simple present and past tense conjugations with common nouns like 'lebas' (clothes), 'dast' (hand), and 'farsh' (carpet). Students learn to use it in imperative forms to give simple warnings like 'Kasif nakon!' (Don't make it dirty!). The goal is to understand that it is a compound verb where 'kardan' does all the grammatical work. Vocabulary at this level is limited to tangible, visible messes like mud or food spills. It's one of the first compound verbs students learn because it perfectly illustrates the 'Adjective + Kardan' pattern used for hundreds of other Persian verbs.
At A2, learners begin to use 'kasif kardan' in more complex sentence structures, including the use of the object marker 'ra' and various prepositions. They learn to describe *how* something was dirtied (e.g., 'with mud,' 'with paint'). The distinction between 'kasif kardan' (transitive) and 'kasif shodan' (intransitive) becomes a major focus to avoid common errors. Learners can now talk about chores, such as cleaning up after someone has 'dirtied' a room. They also start to encounter the verb in different tenses like the present perfect ('kasif karde-am') to describe a current state resulting from a past action. The context expands to include public spaces, cars, and schools, allowing for more detailed descriptions of daily routines and accidents.
By B1, the student is comfortable with all major tenses and can use 'kasif kardan' in conditional sentences (e.g., 'If you go outside in the rain, you will dirty your shoes'). The metaphorical use begins to appear, such as 'dirtying' one's reputation in simple social contexts. Learners also start to distinguish 'kasif kardan' from more specific synonyms like 'lakk kardan' (to stain) or 'khaki kardan' (to get dusty). They can participate in longer conversations about environmental issues using 'alude kardan' as a more formal alternative. The focus shifts toward fluency and using the verb naturally in storytelling, such as describing a childhood memory of playing in the dirt.
At the B2 level, 'kasif kardan' is used with nuance. The learner understands the social implications of the word in Persian culture, particularly regarding the 'Taharat' (purity) concepts. They can use the verb in the passive voice or within complex subordinate clauses. The metaphorical usage becomes more common, and the learner can understand idiomatic expressions like 'dahan-e kasi ra kasif kardan' (to make someone say bad things). They also begin to recognize the verb in journalistic or semi-formal texts where it might describe the 'dirtying' of a political process or a public image. Their vocabulary is now broad enough to choose 'kasif kardan' over 'alude kardan' or 'mulavvas kardan' based on the specific register of the conversation.
At C1, the learner uses 'kasif kardan' and its synonyms with native-like precision. They can appreciate the stylistic choice of using a simple verb like 'kasif kardan' for dramatic effect in literature versus using a more flowery Arabic-derived synonym. They are aware of the historical and etymological roots of the word 'kasif' and how it has evolved. In discussions about ethics, philosophy, or high-level politics, they can use the verb to describe the corruption of ideals. They are also fully proficient in using the verb in all its complex forms, including causative and compound-complex structures. The cultural sensitivity surrounding 'cleanliness' is fully integrated into their speech, allowing them to use the verb to navigate delicate social situations with ease.
At the C2 level, the mastery of 'kasif kardan' is absolute. The speaker can use the verb in wordplay, puns, and high-level rhetorical devices. They can distinguish between the subtle connotations of 'kasif kardan' in different Persian dialects (Tehrani, Dari, Tajiki). They are capable of analyzing classical and modern Persian literature where the concept of 'dirtying' is used as a deep metaphor for human fallibility or social decay. The verb becomes a tool for expressing complex abstract thoughts about the human condition, purity, and the inevitable messiness of life. At this level, the distinction between the physical act and the metaphysical concept is used fluidly to create rich, evocative language.

کثیف کردن in 30 Seconds

  • Kasif kardan is a basic Persian compound verb meaning 'to make dirty.' It is used for physical objects like clothes, floors, and hands.
  • It is a transitive verb, meaning it needs an object (e.g., 'I dirtied my shirt'). It uses the helper verb 'kardan' (to do/make).
  • Common contexts include parenting, cleaning, cooking, and outdoor activities. It is the opposite of 'tamiz kardan' (to clean).
  • Metaphorically, it can mean to ruin a reputation or use foul language ('dirtying the mouth'), though literal use is more frequent.

The Persian compound verb کثیف کردن (kasif kardan) is a foundational element of daily communication, primarily used to describe the act of making something unclean, soiled, or messy. At its core, it combines the adjective کثیف (dirty/filthy) with the light verb کردن (to do/to make). While its most literal application involves physical objects—like a child getting mud on a clean white shirt or a spill ruining a tablecloth—its utility extends far beyond the laundry room. In the Persian-speaking world, where cleanliness (both physical and spiritual) is highly valued, this verb carries a weight of responsibility. It is frequently heard in domestic settings, where parents caution children against creating a mess, or in instructional contexts like cooking and art. Beyond the physical, it can occasionally be used metaphorically to describe the tainting of a reputation or the corruption of a pure concept, though more formal synonyms often take over in high-level literary contexts. Understanding this verb is essential for beginners because it introduces the logic of Persian compound verbs, which are the backbone of the language's verbal system. Unlike English, which often uses single-word verbs like 'soil' or 'stain,' Persian relies on this 'Adjective + Kardan' structure for hundreds of common actions.

Literal Meaning
To perform the act of making something dirty or messy.
Common Subject
Children, pets, weather (rain/mud), or accidental spills.
Grammatical Category
Transitive Compound Verb (requires a direct object).

بچه‌ها، لطفاً با کفش‌های گلی فرش را کثیف نکنید.

(Children, please do not dirty the carpet with muddy shoes.)

In a broader sense, the word 'kasif' itself has origins that imply density or thickness, but in modern Persian, it is the standard word for 'dirty.' When you use this verb, you are usually focusing on the negative change in state—from a state of 'pak' (pure/clean) to 'kasif.' This transition is a common theme in Persian poetry and everyday proverbs, where the preservation of purity is a recurring motif. Whether you are talking about a car after a long drive through the desert or a kitchen after a complex dinner party, this verb is your primary tool. It's also worth noting that in informal speech, the pronunciation might slightly shift, but the written form remains consistent. Mastering this verb allows a learner to navigate basic hygiene, domestic chores, and social boundaries involving personal space and shared items.

گربه تمام اتاق را با پاهای خیسش کثیف کرد.

(The cat dirtied the whole room with its wet paws.)

Historically, the concept of keeping things 'clean' is deeply rooted in the Iranian concept of 'Taharat.' Therefore, 'kasif kardan' is often viewed with a slight sense of annoyance or social faux pas. If you dirty someone's house as a guest, it is considered quite rude, making this verb essential for apologies. You might say, 'Bakhshid ke mizam ra kasif kardam' (Sorry that I dirtied my table/space). In professional environments, such as a laboratory or a sterile hospital setting, this verb is replaced by more technical terms like 'alude kardan' (to contaminate), but for 90% of life's messes, 'kasif kardan' is the go-to phrase.

Using کثیف کردن correctly requires an understanding of Persian compound verb conjugation. The verb 'kardan' is the part that changes to reflect tense, person, and number, while 'kasif' remains static. This structure is very predictable once you learn the patterns of 'kardan.' For example, in the past tense, you use the stem 'kard-' (e.g., kardam, kardi, kard). In the present tense, you use the stem 'kon-' (e.g., mikonam, mikoni, mikonad). Because it is a transitive verb, you almost always need to specify *what* is being made dirty. This object is typically followed by the post-position 'ra' (را) if it is a specific noun.

Present Continuous
دارم لباسم را کثیف می‌کنم (I am dirtying my clothes - perhaps while painting).
Imperative (Command)
کتاب را کثیف نکن! (Don't dirty the book!)
Future Tense
او همه چیز را کثیف خواهد کرد (He will make everything dirty).

چرا دست‌هایت را با این رنگ کثیف کردی؟

(Why did you dirty your hands with this paint?)

A common syntactic pattern is [Subject] + [Object] + [ra] + [Adverb/Instrument] + [kasif kardan]. For instance: 'Sara (Subject) lebasash (Object) ra (marker) ba ghaza (Instrument) kasif kard (Verb).' This means 'Sara dirtied her clothes with food.' Note that the 'ra' is essential in standard writing to mark the definite object. In spoken Persian, 'ra' often becomes a suffix '-o' or '-ro' attached to the noun (e.g., 'lebas-o kasif kardam'). Furthermore, if you want to say someone 'got dirty' (intransitive), you must switch the helper verb to شدن (shodan), resulting in 'kasif shodan.' Mixing these two up is a classic learner mistake—'kasif kardan' is an active choice or a direct result of an action, whereas 'kasif shodan' is a passive change of state.

مواظب باش، لباست را کثیف نکنی!

(Be careful, don't dirty your clothes!)

In formal writing, you might see the verb 'mulavvas kardan' or 'alude kardan,' but 'kasif kardan' remains the most versatile. It can also be used in the negative to express a desire for cleanliness. For example, 'Man hich vaght otagham ra kasif nemikonam' (I never make my room dirty). In terms of word order, remember that the verb always comes at the very end of the sentence. This can be tricky for English speakers who are used to saying 'I dirtied my hands,' where the verb follows the subject immediately. In Persian, it's 'I my hands dirty made.'

The verb کثیف کردن is a staple of everyday life in Iran, Afghanistan, and Tajikistan. You will hear it most frequently in domestic environments. Mothers and fathers are perhaps the most frequent users of this verb, directing it at children who are playing in the garden, eating messy food, or using art supplies. If you visit an Iranian household, you might hear a polite warning as you enter: 'Mova-zeb bash farsh-o kasif nakoni!' (Be careful not to dirty the carpet!). This highlights the cultural emphasis on maintaining a pristine home environment, especially the carpets, which are often expensive and central to the home's aesthetic.

At the Park
'Naro tuye gel, kafsh-hat-o kasif mikoni!' (Don't go in the mud, you'll dirty your shoes!)
In the Kitchen
'Ba dast-e kasif be ghaza dast nazan.' (Don't touch the food with dirty hands - though this uses the adjective, the verb 'kasif kardan' often follows if a mess is made.)
In a Car
'Lutfan tuye mashin chizi nakhor, kasifesh mikoni.' (Please don't eat in the car, you'll make it dirty.)

او همیشه وقتی نقاشی می‌کشد، تمام میز را کثیف می‌کند.

(He always dirties the whole table when he paints.)

Another common place to hear this word is at the dry cleaners or 'khoshk-shui.' You might explain to the clerk, 'In pirahan ra tuye mehmani kasif kardam' (I dirtied this shirt at a party). It's also prevalent in school settings, where teachers might tell students not to dirty their notebooks or the classroom floor. Interestingly, you'll also hear it in the context of pets. If a dog comes inside after rain, the owner might exclaim, 'Tamam-e khane ra kasif kard!' (He dirtied the whole house!).

باران شدید شیشه‌های پنجره را کثیف کرده است.

(The heavy rain has dirtied the window panes.)

In television dramas or movies, you might hear this verb used more dramatically. For instance, a character might be accused of 'dirtying' a family's name, although as mentioned, 'lakke-dar kardan' is more common for 'staining' a reputation. However, in a heated argument, someone might say 'Dahanet-o kasif nakon!' (Don't dirty your mouth!), which is a slangy way of saying 'Don't use foul language.' This shows how the verb can move from the physical realm into the realm of behavior and speech. Overall, it is a high-frequency verb that you will encounter daily if you live among Persian speakers.

One of the most frequent mistakes English speakers make when learning کثیف کردن is confusing it with its intransitive counterpart, کثیف شدن (kasif shodan). In English, the word 'dirty' can be both a verb ('I dirtied the shirt') and an adjective in a state of change ('The shirt got dirty'). In Persian, these are strictly separated by the helper verb. If you say 'Lebas-am kasif kard,' you are literally saying 'My clothes dirtied [something else],' which makes no sense. You must say 'Lebas-am kasif shod' (My clothes became dirty). Conversely, if you are the one who did the action, you must use 'kardan.'

The 'Ra' Omission
Forgetting to use 'ra' after a specific object. Incorrect: 'Man kafsh kasif kardam.' Correct: 'Man kafsh-hayam ra kasif kardam.'
Verb Placement
Putting 'kardan' before the object. Persian is SOV (Subject-Object-Verb). Incorrect: 'Man kardam kasif lebasam ra.'
Misusing 'Dirty' for 'Polluted'
Using 'kasif kardan' for air or water pollution. While understood, 'alude kardan' is the correct term for environmental pollution.

اشتباه: هوا را کثیف نکنید. (درست: آلوده نکنید)

(Mistake: Don't 'dirty' the air. Correct: Don't pollute the air.)

Another mistake involves the pluralization of compound verbs. Some learners try to pluralize 'kasif' instead of 'kardan.' Remember, 'kasif' is an adjective acting as a prefix; it never changes. Only the 'kardan' part receives the endings for 'we,' 'you (plural),' or 'they.' For example, 'Ma otagh ra kasif kardim' (We dirtied the room). Also, be careful with the word 'dast' (hand). In English, we might say 'I got my hands dirty' (metaphorically meaning I got involved in something). In Persian, 'Dast-hayam ra kasif kardam' is almost always literal. If you want to use the idiom for involvement, you would use different phrasing entirely.

اشتباه: من لباسم کثیف کرد. (درست: من لباسم را کثیف کردم)

(Mistake: My clothes dirtied [me]. Correct: I dirtied my clothes.)

Finally, learners sometimes struggle with the causative form. If you *make someone else* dirty something, the grammar changes significantly. But for A1-B1 levels, focusing on the simple transitive 'Subject + Object + kasif kardan' will cover most needs. Just keep a sharp eye on that 'kardan' vs 'shodan' distinction, as it is the most common pitfall for those coming from European language backgrounds.

While کثیف کردن is the most common way to say 'to make dirty,' Persian is a rich language with several synonyms that vary based on the type of dirt and the level of formality. Understanding these can help you sound more like a native speaker. For instance, if you are talking about a small spot or a stain, you might use لک کردن (lakk kardan). This is specific to stains on fabric or surfaces. If you are talking about something becoming 'ritually' unclean according to Islamic law, the word is نجس کردن (najes kardan). This is a very serious word and shouldn't be used for just regular mud or dust.

آلوده کردن (Alude Kardan)
Used for pollution (air, water) or contamination (bacteria, viruses). It is more formal and scientific.
ملوث کردن (Mulavvas Kardan)
A highly formal, Arabic-root synonym often used in literature or legal contexts to mean 'tainting' or 'smearing.'
گل‌آلود کردن (Gel-alude Kardan)
Specifically means 'to make muddy' or 'to make turbid' (like stirring up mud in a pond).

کارخانه‌ها آب رودخانه را آلوده می‌کنند.

(Factories pollute/contaminate the river water.)

In informal, slangy Persian, you might hear گند زدن (gand zadan). While it literally means 'to make a stench,' it is used colloquially to mean 'to mess up' or 'to dirty something badly' (often used for failing a task as well). Another specific verb is خاکی کردن (khaki kardan), which means 'to make dusty' or 'to get dirt/soil on something.' This is very common when kids play outside. For example, 'Lebas-at-o khaki nakoni!' (Don't get your clothes all dusty/dirty!).

مراقب باش قهوه را روی فرش نریزی و آن را لک نکنی.

(Be careful not to spill coffee on the carpet and stain it.)

When choosing between these words, consider the intensity and the medium. 'Kasif kardan' is the safe, middle-ground choice. If you are writing a poem about a lost soul, you would use 'mulavvas.' If you are complaining about the smog in Tehran, you use 'alude.' If you are a mechanic covered in grease, you use 'siyah kardan' (to make black/dirty) or 'kasif kardan.' Learning these nuances allows you to express precision and shows a deeper respect for the linguistic variety within Persian.

How Formal Is It?

Formal

"آلوده کردن محیط زیست جرم است."

Neutral

"لطفاً کفش‌هایتان را درآورید تا فرش کثیف نشود."

Informal

"بچه، باز که لباستو کثیف کردی!"

Child friendly

"عزیزم، دست‌های گلی‌ت رو به دیوار نزن، کثیف می‌شه."

Slang

"دهنتو کثیف نکن، ارزششو نداره."

Fun Fact

While 'kasif' means dirty in Persian, if you go to an Arabic-speaking country and say 'kasif,' they might think you are talking about 'dense fog' (mebab kasif). The Persian shift from 'dense' to 'dirty' likely came from the idea of 'thick grime' or 'dense filth.'

Pronunciation Guide

UK /kæˈsiːf kæɾˈdæn/
US /kæˈsif kɑːrˈdæn/
The primary stress is on the second syllable of 'kardan' (dán), and a secondary stress on the second syllable of 'kasif' (síf).
Rhymes With
Tashrif (honor) Sharif (noble) Zarif (delicate) Kardan (to do) Mardan (men) Gardan (neck) Vardan (rolling pin) Zardan (to hit - archaic)
Common Errors
  • Pronouncing 'kasif' as 'ka-safe' (rhyming with safe). It should be 'ee' as in 'leaf'.
  • Failing to roll the 'r' in 'kardan'.
  • Merging the two words into one without a slight pause (it is a compound verb).
  • Pronouncing the 'k' in 'kasif' too far back in the throat like 'q'. It is a standard 'k' sound.
  • Stress on the first syllable of 'kasif'. In Persian verbs, stress usually falls toward the end.

Difficulty Rating

Reading 2/5

Easy to recognize as it's a common compound verb with a distinct adjective.

Writing 3/5

Requires knowledge of 'kardan' conjugation and object marker 'ra'.

Speaking 2/5

Very high frequency; students get lots of practice.

Listening 2/5

Clear pronunciation, though 'ra' often blends into the noun in speech.

What to Learn Next

Prerequisites

کردن (to do) تمیز (clean) لباس (clothes) دست (hand) گل (mud)

Learn Next

تمیز کردن (to clean) شستن (to wash) پاک کردن (to wipe/purify) آلوده کردن (to pollute) مرتب کردن (to tidy up)

Advanced

ملوث ساختن (to taint) منجس کردن (to make ritually impure) لکه‌دار کردن (to stain/tarnish)

Grammar to Know

Compound Verb Structure

Adjective (کثیف) + Light Verb (کردن) = New Action.

Object Marker 'Ra'

لباس را کثیف کردم. (I dirtied the clothes.)

Transitive vs. Intransitive

کثیف کردن (to make dirty) vs. کثیف شدن (to become dirty).

Present Continuous with 'Dashtan'

دارم کثیف می‌کنم. (I am dirtying.)

Negative Imperative with 'Na-'

کثیف نکن! (Don't dirty!)

Examples by Level

1

من لباسم را کثیف کردم.

I dirtied my clothes.

Simple past tense of 'kardan'.

2

کفش‌هایت را کثیف نکن.

Don't dirty your shoes.

Negative imperative form.

3

بچه صورتش را کثیف کرد.

The baby dirtied its face.

Third person singular past tense.

4

آیا فرش را کثیف کردی؟

Did you dirty the carpet?

Question form in the past tense.

5

او همیشه دست‌هایش را کثیف می‌کند.

He always dirties his hands.

Present habitual tense.

6

لطفاً اینجا را کثیف نکنید.

Please do not dirty this place.

Polite plural negative imperative.

7

سگ اتاق را کثیف کرد.

The dog dirtied the room.

Simple sentence with a direct object.

8

من نمی‌خواهم لباسم را کثیف کنم.

I don't want to dirty my clothes.

Present subjunctive with 'want'.

1

او با بستنی پیراهنش را کثیف کرد.

She dirtied her shirt with ice cream.

Use of 'ba' (with) to show the instrument.

2

اگر در باران بازی کنی، خودت را کثیف می‌کنی.

If you play in the rain, you will get yourself dirty.

Conditional sentence Type 1.

3

چرا کتاب‌های مدرسه‌ات را کثیف کردی؟

Why did you dirty your school books?

Wh-question in the past tense.

4

ما نباید پارک را کثیف کنیم.

We should not dirty the park.

Modal verb 'nabayad' (should not) + subjunctive.

5

گربه با پاهای خیس تمام مبل را کثیف کرده است.

The cat has dirtied the whole sofa with its wet feet.

Present perfect tense.

6

او داشت دیوار را با مداد کثیف می‌کرد.

He was dirtying the wall with a pencil.

Past continuous tense.

7

مواظب باش، داری میز را کثیف می‌کنی.

Be careful, you are dirtying the table.

Present continuous tense.

8

می‌توانید بدون کثیف کردن آشپزخانه غذا درست کنید؟

Can you cook food without dirtying the kitchen?

Gerund-like use with 'bedun-e' (without).

1

او با این کارش آبروی خانواده را کثیف کرد.

With this action, he dirtied (stained) the family's reputation.

Metaphorical use of the verb.

2

هر بار که باران می‌بارد، ماشینم را کثیف می‌کند.

Every time it rains, it dirties my car.

Habitual action in the present.

3

من سعی می‌کنم محیط زیست را کثیف نکنم.

I try not to dirty the environment.

Subjunctive after 'try'.

4

او بعد از کار در باغچه، تمام راهرو را کثیف کرد.

After working in the garden, he dirtied the whole hallway.

Temporal clause with 'ba'ad az'.

5

نباید اجازه دهی افکار منفی ذهنت را کثیف کنند.

You shouldn't let negative thoughts dirty your mind.

Abstract usage.

6

او با ریختن جوهر، میز چوبی گران‌قیمت را کثیف کرد.

By spilling ink, he dirtied the expensive wooden table.

Participial phrase 'ba rikhtan-e'.

7

آیا فکر می‌کنی این رنگ دیوار را کثیف خواهد کرد؟

Do you think this paint will dirty the wall?

Future tense in a subordinate clause.

8

او همیشه از کثیف کردن دست‌هایش می‌ترسد.

He is always afraid of dirtying his hands.

Infinitive as a noun 'kasif kardan'.

1

سیاستمداران گاهی با دروغ گفتن، فضای جامعه را کثیف می‌کنند.

Politicians sometimes dirty the atmosphere of society by lying.

Complex abstract subject and object.

2

او با دخالت در این پرونده، دست‌هایش را کثیف کرد.

By interfering in this case, he dirtied his hands (got involved in something bad).

Idiomatic usage.

3

هرگز اجازه نده کسی با توهین، روزت را کثیف کند.

Never let anyone dirty your day with insults.

Imperative with 'ejaze dade'.

4

او با رفتار غیرحرفه‌ای‌اش، محیط کار را کثیف کرده است.

With his unprofessional behavior, he has dirtied the work environment.

Present perfect for ongoing impact.

5

این شایعات ممکن است شهرت او را کثیف کنند.

These rumors might dirty (tarnish) her reputation.

Modal 'momken ast' (it is possible).

6

او مدعی است که مخالفانش می‌خواهند نام او را کثیف کنند.

He claims that his opponents want to dirty his name.

Subordinate clause with 'ke'.

7

نباید با این حرف‌های زشت، دهانت را کثیف کنی.

You shouldn't dirty your mouth with these ugly words.

Cultural idiom.

8

او با روغن ماشین، تمام لباس‌های کارش را کثیف کرد.

He dirtied all his work clothes with engine oil.

Specific technical context.

1

فساد سیستماتیک می‌تواند تار و پود یک ملت را کثیف کند.

Systematic corruption can dirty the very fabric of a nation.

High-level literary metaphor.

2

او با خیانت به اصولش، روح خود را کثیف کرد.

By betraying his principles, he dirtied his soul.

Philosophical context.

3

منتقدان معتقدند که این سبک معماری، منظره شهر را کثیف کرده است.

Critics believe that this architectural style has dirtied (cluttered/ruined) the city's skyline.

Aesthetic criticism.

4

او سعی داشت با پاشیدن رنگ، اثر هنری رقیبش را کثیف کند.

He tried to dirty his rival's artwork by splashing paint.

Intentional action description.

5

تبلیغات منفی می‌تواند ذهنیت عمومی را نسبت به این پروژه کثیف کند.

Negative advertising can dirty the public mindset regarding this project.

Psychological/Social context.

6

او با وارد کردن مسائل شخصی به بحث، گفتمان را کثیف کرد.

He dirtied the discourse by bringing personal issues into the discussion.

Intellectual register.

7

ما نباید اجازه دهیم حرص و طمع، روابط انسانی را کثیف کند.

We must not allow greed to dirty human relationships.

Moral exhortation.

8

او با ریختن پسماندهای شیمیایی، خاک منطقه را کثیف کرد.

He dirtied the soil of the region by dumping chemical waste.

Environmental crime context.

1

در ادبیات کلاسیک، گناه اغلب به عنوان عاملی تصویر می‌شود که ساحت قدسی انسان را کثیف می‌کند.

In classical literature, sin is often portrayed as a factor that dirties the sacred realm of man.

Academic/Literary register.

2

او با آمیختن حقیقت و دروغ، چشمه‌های معرفت را کثیف کرد.

By mixing truth and lies, he dirtied the springs of knowledge.

Highly abstract poetic language.

3

آیا هنر می‌تواند بدون کثیف کردن دست‌ها در لجن‌زار سیاست زنده بماند؟

Can art survive without dirtying its hands in the quagmire of politics?

Rhetorical question with complex metaphor.

4

تاریخ‌نگاران بر این باورند که این واقعه، حافظه تاریخی یک ملت را کثیف کرده است.

Historians believe that this event has dirtied the historical memory of a nation.

Historiographical context.

5

او با وقاحت تمام، ساحت هنر را با کارهای سخیفش کثیف کرد.

With utter impudence, he dirtied the realm of art with his trivial works.

Strong emotional/judgmental tone.

6

هرگونه تلاش برای کثیف کردن چهره قهرمانان ملی با واکنش تند مردم روبرو خواهد شد.

Any attempt to dirty (besmirch) the face of national heroes will be met with a sharp reaction from the people.

Political/Nationalistic discourse.

7

او با قلمش نه تنها کاغذ، بلکه وجدان عمومی را کثیف کرد.

With his pen, he dirtied not only the paper but also the public conscience.

Metonymy and metaphor.

8

در این دنیای پر از مادیات، چگونه می‌توان دامن را از کثیف کردن پاک نگه داشت؟

In this materialistic world, how can one keep one's skirt (honor/self) clean from being dirtied?

Archaic/Poetic idiom 'daman pak negah dashtan'.

Common Collocations

فرش را کثیف کردن
دست‌ها را کثیف کردن
لباس را کثیف کردن
هوا را کثیف کردن
نام کسی را کثیف کردن
آشپزخانه را کثیف کردن
دفتر را کثیف کردن
ماشین را کثیف کردن
صورت را کثیف کردن
ظرف‌ها را کثیف کردن

Common Phrases

کثیف نکن!

— Don't make a mess! / Don't dirty it!

روی مبل نپر، کثیف نکن!

همه جا را کثیف کردن

— To make a mess everywhere.

رنگ پاشید و همه جا را کثیف کرد.

خود را کثیف کردن

— To get oneself dirty.

بچه در باغچه خودش را کثیف کرد.

با چی کثیف کردی؟

— What did you dirty it with?

این لکه چیست؟ با چی کثیف کردی؟

حیف است کثیف شود

— It's a pity if it gets dirty (used for new/nice things).

این لباس نو است، حیف است کثیف شود.

دوباره کثیف کردی؟

— Did you dirty it again? (Expressing frustration).

همین الان شستمت، دوباره کثیف کردی؟

مواظب باش کثیف نکنی

— Be careful not to make it dirty.

داری نقاشی می‌کنی، مواظب باش فرش را کثیف نکنی.

کثیف کردن عمدی

— Intentional dirtying/vandalism.

او از روی کینه دیوار را کثیف کرد.

کثیف کردن محیط

— Littering or dirtying the environment.

کثیف کردن محیط جریمه دارد.

چقدر کثیف کردی!

— How much you've dirtied (this place/thing)!

وای! چقدر اینجا را کثیف کردی!

Often Confused With

کثیف کردن vs کثیف شدن

This means 'to become dirty' (passive). Use it when the object gets dirty on its own or the actor isn't mentioned.

کثیف کردن vs تمیز کردن

This is the opposite; 'to clean.' Sometimes beginners swap them by accident.

کثیف کردن vs آلوده کردن

Specifically for pollution or germs. Don't use 'kasif kardan' for a virus.

Idioms & Expressions

"دهان خود را کثیف کردن"

— To use foul language or swear. It implies the words are too beneath the person.

ارزش ندارد با جواب دادن به او دهانت را کثیف کنی.

Informal/Slang
"دست خود را کثیف کردن"

— To get involved in a shady, illegal, or unethical business.

او برای پول دستش را کثیف نمی‌کند.

Neutral
"دامن کسی را کثیف کردن"

— To stain someone's honor or chastity (archaic/literary).

او سعی کرد با تهمت دامن او را کثیف کند.

Literary
"کثیف‌کاری کردن"

— To do something sloppily or to make a huge, annoying mess.

بیا آشپزی کنیم ولی کثیف‌کاری نکنیم.

Informal
"پول کثیف"

— Dirty money (money obtained through illegal means).

او با پول کثیف این خانه را خریده است.

Neutral
"کثیف‌بازی درآوردن"

— To play dirty (in a game or business); to act unfairly.

در مسابقه کثیف‌بازی درنیاور.

Slang
"ذهن کثیف"

— Dirty mind (perverted or malicious thinking).

او همیشه به همه چیز با ذهن کثیف نگاه می‌کند.

Informal
"آب را گل‌آلود کردن"

— To muddy the waters (to make a situation confusing to gain advantage).

او می‌خواهد با دروغ، آب را گل‌آلود کند.

Literary/Idiom
"کثیف کردن سفره"

— To mess up a meal or literally spill on the tablecloth (often implies bad manners).

بچه تمام سفره را کثیف کرد.

Neutral
"کثیف کردن پرونده"

— To ruin one's record or file (usually legal or professional).

یک اشتباه می‌تواند پرونده‌ات را کثیف کند.

Neutral

Easily Confused

کثیف کردن vs نجس کردن

Both mean 'dirty' in a way.

Kasif is physical dirt; Najes is ritual impurity (religious).

Mud makes a shirt 'kasif'; a dog's saliva makes it 'najes'.

کثیف کردن vs لک کردن

Both involve making something unclean.

Kasif is general mess; Lakk is a specific spot or stain.

I dirtied (kasif kardam) the floor, but I stained (lakk kardam) the silk tie.

کثیف کردن vs خاکی کردن

Often used interchangeably in outdoor contexts.

Khaki is specifically about dust/soil; Kasif is any dirt.

I got my pants dusty (khaki kardam) in the desert.

کثیف کردن vs سیاه کردن

Blackening something makes it dirty.

Siyah kardan is literal blackening (soot, charcoal).

The chimney sweep dirtied (siyah kard) his face.

کثیف کردن vs چرک کردن

Refers to grime.

Cherk is often the result of long-term use (like a collar).

This shirt collar is grimy (cherk karde).

Sentence Patterns

A1

[Object] را کثیف کردم.

میز را کثیف کردم.

A1

[Object] را کثیف نکن.

فرش را کثیف نکن.

A2

با [Instrument] [Object] را کثیف کرد.

با رنگ دیوار را کثیف کرد.

A2

دارم [Object] را کثیف می‌کنم.

دارم لباسم را کثیف می‌کنم.

B1

اگر [Condition]، [Object] را کثیف می‌کنی.

اگر بازی کنی، کفش‌هایت را کثیف می‌کنی.

B1

نباید [Object] را کثیف کنیم.

نباید طبیعت را کثیف کنیم.

B2

[Subject] با [Action]، [Abstract Object] را کثیف کرد.

او با دروغ، آبرویش را کثیف کرد.

C1

هرگونه [Action] منجر به کثیف کردن [Object] می‌شود.

هرگونه غفلت منجر به کثیف کردن محیط می‌شود.

Word Family

Nouns

Verbs

Adjectives

Related

How to Use It

frequency

Extremely high in daily domestic and social Persian.

Common Mistakes
  • من کثیف کردم لباسم را. من لباسم را کثیف کردم.

    Persian verbs must come at the end of the sentence. Do not follow the English SVO pattern.

  • فرش کثیف کرد. فرش کثیف شد.

    The carpet cannot 'dirty' something else; it 'became dirty.' Use 'shodan' for passive states.

  • او دست‌هایش کثیف کرد. او دست‌هایش را کثیف کرد.

    Definite objects in Persian require the marker 'ra'.

  • هوا کثیف کردن. هوا را آلوده کردن.

    While 'kasif' works for air, 'alude' is the proper term for pollution.

  • من کثیف می‌کنم دستم با رنگ. من دستم را با رنگ کثیف می‌کنم.

    Word order: Subject + Object + Instrument + Verb.

Tips

Helper Verb Mastery

Master the conjugation of 'kardan' in all tenses. Since 'kasif' never changes, your only job is to conjugate 'kardan' correctly. This will help you with 50% of all Persian verbs.

The Carpet Rule

In Iran, 'kasif kardan' a carpet is a serious matter. Always use this verb to apologize if you accidentally spill something or walk on a rug with shoes.

Choose your synonym

Use 'lakk kardan' for small spots and 'kasif kardan' for general messes. This precision makes you sound more advanced.

The Long 'ee'

Ensure the 'i' in 'kasif' is long like in 'machine.' If you make it short, it might be harder to understand.

Avoid for People

Never describe a person as 'kasif' unless you intend to insult them deeply. Use 'nam مرتب' (untidy) if they just have messy hair.

Object Marker

In written Persian, always include 'ra' after the object. 'Lebas ra kasif kard' is the only correct way in a formal letter.

The 'o' sound

In Tehrani dialect, 'ra' sounds like 'o'. So you will hear 'Lebas-o kasif kardam.' Don't look for the word 'ra' in casual conversation.

Dirty Keys

Think: 'KAsif' sounds like 'K-S-F'. Keep Stuff Fresh, otherwise you will KASIF it!

Active vs Passive

If you are the cause, use 'kardan'. If it just happened, use 'shodan'. This is the #1 rule for Persian compound verbs.

Polite Warnings

Use 'Movazeb bash kasif nakoni' as a polite way to tell someone to be careful with your things.

Memorize It

Mnemonic

Think of a 'K-S-F' (Key-Safe-File). If you drop your 'Key' in 'Silt' and 'Filth', you 'KASIF' (dirty) it. Then you 'KARDAN' (do/make) the mess.

Visual Association

Imagine a white Persian carpet. Now imagine a big bottle of black ink falling on it. As the ink spreads, shout 'KASIF KARDAM!' (I made it dirty!). The contrast of the white carpet and black ink will stick in your mind.

Word Web

Dirty Soil Mess Stain Pollute Mud Dust Laundry

Challenge

Try to find three things in your house right now that you could 'kasif kardan' and name them in Persian. (e.g., farsh, lebas, dast).

Word Origin

The word 'kasif' (کثیف) is an Arabic loanword from the root K-Th-F (کثف), which originally meant 'to be thick, dense, or coarse.' In Arabic, it is still used to mean 'dense' (like a forest or fog). Persian adopted it and shifted the primary meaning toward 'dirty' or 'unclean.'

Original meaning: Thick, dense, or coarse.

Afro-Asiatic (Arabic root) + Indo-European (Persian helper verb).

Cultural Context

Be careful using 'kasif' to describe a person. Calling someone 'kasif' (dirty) is a strong insult, implying they are immoral or have poor hygiene.

In English, we have many words like soil, stain, begrime, and mess up. Persian uses 'kasif kardan' for almost all of these in daily life.

Modern Persian songs often use 'kasif' to describe a 'dirty world' (donya-ye kasif). Iranian cinema often shows scenes of mothers scolding children for 'kasif kardan' their clothes. The phrase 'پول کثیف' (Dirty Money) is used in Iranian news just like in English.

Practice in Real Life

Real-World Contexts

At Home

  • فرش را کثیف نکن.
  • ظرف‌ها را کثیف کردم.
  • آشپزخانه کثیف شده است.
  • باید اینجا را تمیز کنیم.

With Children

  • دستت را کثیف نکن.
  • لباست کثیف شد.
  • با شکلات همه جا را کثیف کردی.
  • برو دست‌هایت را بشوی.

In a Car

  • ماشین را کثیف نکنید.
  • کفش‌های گلی ماشین را کثیف کرد.
  • توی ماشین چیزی نخور.
  • باید ماشین را به کارواش ببرم.

Art/Hobbies

  • میز را با رنگ کثیف کردم.
  • مواظب باش تابلو را کثیف نکنی.
  • قلم‌موها را کثیف رها نکن.
  • پیش‌بند بپوش تا لباست کثیف نشود.

Nature/Outdoors

  • توی گل نرو، کثیف می‌شوی.
  • باران پنجره‌ها را کثیف کرد.
  • کفش‌هایم خیلی کثیف شده‌اند.
  • زمین خیس است، لباست را کثیف می‌کنی.

Conversation Starters

"آیا تا به حال در یک مهمانی لباس خود را کثیف کرده‌اید؟"

"چگونه می‌توانید بدون کثیف کردن آشپزخانه، یک غذای خوشمزه درست کنید؟"

"وقتی بچه‌ها خانه را کثیف می‌کنند، چه حسی دارید؟"

"آیا فکر می‌کنید ماشین‌های سیاه زودتر کثیف می‌شوند؟"

"بهترین راه برای تمیز کردن فرشی که کثیف شده چیست؟"

Journal Prompts

خاطره‌ای از زمانی که در کودکی خودتان را خیلی کثیف کردید بنویسید.

چرا بعضی از مردم نسبت به کثیف شدن خانه‌شان خیلی حساس هستند؟

تفاوت بین کثیف کردن فیزیکی و کثیف کردن ذهن یا روح چیست؟

اگر کسی هدیه‌ای که به او داده‌اید را کثیف کند، چه واکنشی نشان می‌دهید؟

درباره یک روز بارانی بنویسید که تمام لباس‌ها و کفش‌هایتان کثیف شد.

Frequently Asked Questions

10 questions

Yes, it is understood, but 'alude kardan' (آلوده کردن) is much better and more common for environmental contexts. 'Kasif kardan' sounds a bit childish when referring to the atmosphere.

'Kasif kardan' is the verb 'to make dirty.' 'Kasif-kari' is a noun meaning 'the act of making a mess' or 'sloppy work.' You usually use it with the verb 'kardan' as well: 'kasif-kari kardan' (to make a big mess).

Yes, the root is Arabic (K-Th-F), but it has been fully integrated into Persian for centuries with a slightly different meaning than the original Arabic 'dense'.

You should use 'kasif shodam' (کثیف شدم). If you say 'kasif kardam,' people will wait for you to say *what* you dirtied.

Not at all. It is the standard word. However, calling a *person* 'kasif' is a very strong insult.

No, for computer viruses or digital corruption, use 'alude kardan' or 'kharab kardan'.

The past participle is 'کثیف کرده' (kasif karde). It's used to form perfect tenses.

Yes, if you spill juice and it makes a mess, you can say 'Zamin ra kasif kardam' (I dirtied the floor).

Dast-hait ra kasif nakon (دست‌هایت را کثیف نکن).

Usually, people just use the object suffix: 'kasifesh nakon' (don't dirty it).

Test Yourself 180 questions

writing

Write a sentence in Persian: 'I dirtied my shirt with food.'

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

Correct! Not quite. Correct answer:
writing

Write a sentence in Persian: 'Don't dirty the carpet!'

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Correct! Not quite. Correct answer:
writing

Write a sentence in Persian: 'The rain dirtied the car.'

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Correct! Not quite. Correct answer:
writing

Write a sentence in Persian: 'Why did you dirty your hands?'

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writing

Write a sentence in Persian: 'We should not dirty the park.'

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writing

Write a sentence in Persian: 'He dirtied his reputation with lies.'

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writing

Write a sentence in Persian: 'The baby dirtied the whole wall.'

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writing

Write a sentence in Persian: 'I am dirtying the floor while painting.'

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writing

Write a sentence in Persian: 'Please don't dirty this place.'

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writing

Write a sentence in Persian: 'The cat dirtied the sofa with wet paws.'

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writing

Write a sentence in Persian: 'They will dirty the kitchen if they cook.'

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writing

Write a sentence in Persian: 'She has dirtied her new notebook.'

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writing

Write a sentence in Persian: 'Don't dirty your mouth with these words.'

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writing

Write a sentence in Persian: 'I dirtied the table with ink.'

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writing

Write a sentence in Persian: 'The dog dirtied the room after the rain.'

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writing

Write a sentence in Persian: 'You are dirtying your clothes.'

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writing

Write a sentence in Persian: 'Who dirtied the window?'

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writing

Write a sentence in Persian: 'I forgot not to dirty the floor.'

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writing

Write a sentence in Persian: 'He dirtied the car with mud.'

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writing

Write a sentence in Persian: 'Can you cook without dirtying the dishes?'

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Correct! Not quite. Correct answer:
speaking

Talk about a time you dirtied your clothes at a party.

Read this aloud:

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speaking

Explain to a child why they shouldn't dirty the carpet.

Read this aloud:

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speaking

Discuss environmental pollution using 'kasif kardan' and 'alude kardan'.

Read this aloud:

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speaking

What do you do when your car gets dirty?

Read this aloud:

Correct! Not quite. Correct answer:
speaking

Describe a messy kitchen after a big dinner.

Read this aloud:

Correct! Not quite. Correct answer:
speaking

Give a warning to someone walking in the mud.

Read this aloud:

Correct! Not quite. Correct answer:
speaking

How do you feel when people litter in public parks?

Read this aloud:

Correct! Not quite. Correct answer:
speaking

Talk about 'dirty money' and its impact on society.

Read this aloud:

Correct! Not quite. Correct answer:
speaking

Describe the process of painting a room without making a mess.

Read this aloud:

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speaking

Explain the Persian idiom 'dahan-o kasif nakon'.

Read this aloud:

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speaking

What are common things that dirty a house?

Read this aloud:

Correct! Not quite. Correct answer:
speaking

Tell a story about a pet making a mess.

Read this aloud:

Correct! Not quite. Correct answer:
speaking

Do you like rainy weather? Why or why not?

Read this aloud:

Correct! Not quite. Correct answer:
speaking

How do you keep your workspace clean?

Read this aloud:

Correct! Not quite. Correct answer:
speaking

Is it important to keep the city clean?

Read this aloud:

Correct! Not quite. Correct answer:
speaking

What is the dirtiest job you can think of?

Read this aloud:

Correct! Not quite. Correct answer:
speaking

Discuss the difference between physical and moral dirt.

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speaking

How do children react when they get dirty?

Read this aloud:

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speaking

Describe a time someone dirtied your favorite item.

Read this aloud:

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speaking

How has the concept of 'cleanliness' changed in history?

Read this aloud:

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listening

Listen to the sentence: 'Ali farsh-o kasif kard.' What did Ali dirty?

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listening

Listen: 'Movazeb bash lebas-eto kasif nakoni.' Is this a command or a statement?

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listening

Listen: 'Baran mashin-o kasif karde.' Has it already happened?

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listening

Listen: 'Nabayad tabiat-o kasif konim.' Who is included in this?

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listening

Listen: 'Dast-hamo ba rang kasif kardam.' What was used to dirty the hands?

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listening

Listen: 'Chara mizo kasif kardi?' Is the speaker happy or asking a question?

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listening

Listen: 'Gonde zadi be hame chi!' Is this formal or slang?

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listening

Listen: 'Bedune kasif kardan ashpazi kon.' What is the condition?

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listening

Listen: 'Dahaneto kasif nakon.' What is the person doing?

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listening

Listen: 'In rang divaro kasif mikone.' Does the color dirty the wall now or in the future?

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listening

Listen: 'Kafsh-hat-o kasif nakoni-ha!' What is the tone?

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listening

Listen: 'Hame ja ro kasif kardan.' How many people dirtied the place?

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listening

Listen: 'Pul-e kasif tuye siyasat ziade.' What is the topic?

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listening

Listen: 'Kasif-kari nakonin.' What is the speaker asking for?

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listening

Listen: 'Daman-e khod ra kasif nakard.' Is this formal or informal?

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/ 180 correct

Perfect score!

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