At the A1 level, you only need to know that 'Shek Kardan' means 'to doubt' or 'to suspect.' You can use it in very simple sentences like 'I doubt' (Man shek mi-konam). At this stage, don't worry too much about complex grammar. Just remember that if you doubt something, you use the word 'be' before that thing. For example, 'Man be u shek kardam' (I doubted him). It is a useful word to say when you are not sure if someone is telling the truth. Think of it as the opposite of 'Bavar kardan' (to believe). Even as a beginner, saying 'Shek nakon' (Don't doubt) is a very common and easy phrase to learn to show you are sure about something. It's like saying 'Trust me!' in English. Focus on the present tense 'shek mi-konam' and the past tense 'shek kardam.'
At the A2 level, you should start using 'Shek Kardan' to describe feelings of uncertainty in daily life. You can use it with common objects and people. For example, 'I doubt this food is fresh' (Be tazegi-ye in ghaza shek mi-konam). You should also learn the difference between 'Shek kardan' (the action) and 'Shek dashtan' (having the state of doubt). 'Shek daram' is very common when you want to say 'I have my doubts.' At this level, you can also start using it in short questions like 'Be man shek dari?' (Do you doubt me?). You should be able to conjugate the verb 'kardan' in simple present, past, and future tenses. Remember that the word 'Shek' never changes; only the 'kardan' part does. This makes it easier to use once you master the verb 'kardan'.
At the B1 level, which is the target level for this word, you should understand the nuances of suspicion versus simple uncertainty. You should be comfortable using 'Shek Kardan' with the preposition 'be' and following it with a clause using 'ke' (that). For example, 'Shek kardam ke aya u rast miguyad' (I doubted whether he was telling the truth). At this level, you should also be aware of the synonym 'Tardid kardan' and know that 'Shek' is often more about suspicion or lack of trust. You can use it to discuss more abstract topics like doubting a plan, a theory, or a promise. You should also recognize the word 'Mashkuk' (suspicious) as a related adjective. B1 learners should be able to use the negative form 'Shek nakardan' to reassure others and use the verb in the subjunctive mood when it follows words of uncertainty.
At the B2 level, you can use 'Shek Kardan' in more complex argumentative contexts. You might use it to express skepticism during a debate or when analyzing a text. You should understand how it fits into the broader Persian concept of 'Zaher and Baten' (the apparent and the hidden). You can use it in the passive-like structure 'be shek oftadan' (to fall into doubt) to describe a sudden change in your mental state. For example, 'Ba didane raftare u, be shek oftadam' (By seeing his behavior, I fell into doubt). You should also be able to use the noun form 'Shek' in various idioms like 'bedune shak' (without a doubt) and 'jay-e shak nist' (there is no room for doubt). At this level, your usage should be fluid and natural, reflecting an understanding of when 'Shek' is appropriate versus when a softer word like 'Tardid' is better.
At the C1 level, you should explore the philosophical and literary uses of 'Shek Kardan.' You can use it to discuss the works of Persian philosophers who used doubt as a tool for reaching truth. You should be able to distinguish between 'Shek' (doubt), 'Shobhe' (ambiguity/legal doubt), and 'Reyb' (corrosive suspicion) in formal writing. Your vocabulary should include 'Shek-garayi' (Skepticism) and you should be able to discuss the role of doubt in modern Iranian society or literature. You can use complex sentence structures, such as 'Hich ja-yi baraye shek va tardid baghi nemanad' (No room for doubt and hesitation remained). At this level, you should also be sensitive to the social implications of using this verb, knowing when it might be seen as an offensive accusation and how to mitigate that with polite language.
At the C2 level, you have a masterly command of 'Shek Kardan' and its entire family of words. You can use it with absolute precision in academic, legal, or poetic contexts. You understand the historical evolution of the word from its Arabic roots and its integration into the Persian compound verb system. You can engage in high-level discussions about the 'epistemology of doubt' in Persian thought. You are also familiar with obscure idioms and can use 'Shek' in wordplay or sophisticated rhetoric. You can navigate the most delicate social situations where doubt must be expressed with extreme subtlety or 'Ta'arof.' At this level, you don't just use the word; you understand its weight in the Persian psyche and can use it to evoke specific emotional and intellectual responses in your audience.

شک کردن in 30 Seconds

  • A common compound verb meaning to doubt or suspect.
  • Always use the preposition 'be' with the object being doubted.
  • Used in both everyday suspicion and deep philosophical inquiry.
  • Contrast with 'tardid' (hesitation) and 'yaghin' (certainty).

The Persian compound verb شک کردن (Shek Kardan) is a fundamental expression used to convey the act of doubting, feeling uncertain, or suspecting something or someone. It is composed of the noun 'Shek' (doubt/suspicion), which originates from Arabic, and the Persian auxiliary verb 'Kardan' (to do/to make). In the tapestry of Persian communication, this word bridges the gap between simple uncertainty and deep-seated suspicion. It is not merely about having a question; it is about a lack of conviction in the truth or reliability of a statement, a person, or a situation. When you use this verb, you are indicating that your mind is not at rest regarding a particular matter. It is frequently used in everyday conversations, literature, and legal contexts to describe the mental state of skepticism. For example, if someone tells a story that seems too good to be true, a native speaker might say they 'doubt' it. The beauty of this verb lies in its versatility; it can range from a light, inquisitive doubt to a heavy, accusatory suspicion depending on the tone and context of the sentence.

Core Nuance
The primary nuance involves a lack of trust or certainty. Unlike 'Tardid' which often implies hesitation between two choices, 'Shek' is more about the validity of a single fact or the integrity of a person.
Social Context
In Iranian culture, expressing doubt can sometimes be seen as sensitive. Using this verb directly towards someone can be perceived as an accusation, so speakers often use softer structures or impersonal forms to maintain 'Ta'arof' (politeness).

من به صداقت او شک کردم چون حرف‌هایش ضد و نقیض بود. (I doubted his honesty because his words were contradictory.)

آیا هرگز به توانایی‌های خودت شک کرده‌ای؟ (Have you ever doubted your own abilities?)

Furthermore, 'Shek Kardan' is often contrasted with 'Yaghin Dashtan' (to have certainty). In philosophical discussions, 'Shek' is the starting point of inquiry. Renowned Persian poets and philosophers often discuss the transition from doubt to certainty as a spiritual journey. In modern usage, you will hear this word in detective movies when a police officer suspects a criminal, or in a romantic drama when a partner suspects infidelity. It is a powerful verb that carries significant emotional and cognitive weight. Understanding when to use it requires an appreciation for the level of skepticism you wish to convey. If you are merely unsure about a decision, 'Tardid' might be better, but if you suspect a hidden truth or a lie, 'Shek Kardan' is your go-to expression. It is a B1 level word because while its structure is simple, its application requires an understanding of social dynamics and subtle psychological states.

پلیس به راننده شک کرد و ماشین را نگه داشت. (The police suspected the driver and stopped the car.)

هیچ‌وقت به عشق من شک نکن. (Never doubt my love.)

Grammatical Structure
As a compound verb, only the 'Kardan' part changes for tense and person. For example, 'Shek mi-konam' (I doubt), 'Shek kardam' (I doubted), 'Shek khaham kard' (I will doubt).

من به نتایج این آزمایش شک دارم. (I have doubt about the results of this experiment - using 'dashtan' as a variation.)

Using شک کردن correctly involves understanding its relationship with the preposition به (be). In English, we say 'I doubt him' or 'I doubt the news.' In Persian, the structure is 'I doubt TO him' or 'I doubt TO the news.' This 'to' (به) is the bridge between the subject and the object of doubt. Let's explore how this looks in different tenses and moods. In the present continuous, you might say 'Daram shek mi-konam' (I am starting to doubt/I am doubting), which implies a process of realization. In the past tense, 'Shek kardam' indicates a completed moment of suspicion. One of the most common ways to use this verb is in the negative imperative: 'Shek nakon!' (Don't doubt!). This is often said to reassure someone of one's loyalty or the truth of a statement. It's also important to note that 'Shek' can be used with the verb 'Dashtan' (to have) to mean 'to have doubt,' which is slightly more static and state-oriented than 'Shek Kardan,' which is more active.

Sentence Pattern 1: Basic Doubt
[Subject] + [به] + [Object] + [شک کردن conjugated]. Example: سارا به حرف‌های برادرش شک کرد. (Sara doubted her brother's words.)

او به موفقیت پروژه شک کرده است. (He has doubted the success of the project.)

Sentence Pattern 2: Conditional Doubt
If you want to say 'I doubt if...', you use 'شک دارم که...'. Example: شک دارم که او بیاید. (I doubt that he will come.) Note the use of the subjunctive 'bi-yayad'.

Another interesting usage is in the context of 'Self-Doubt.' In Persian, this is expressed as 'be khod shek kardan.' This is a common theme in psychological discussions and motivational speeches in Iran. You might also encounter the word in passive-like structures or when discussing scientific skepticism. In formal writing, such as a legal document or a formal news report, 'Shek kardan' might be replaced by 'tardid namoodan' (a more formal version of kardan), but 'Shek' remains the core noun. In everyday Tehran slang, you might hear 'Shek nakon' as a way of saying 'You bet!' or 'Absolutely!' when someone asks for confirmation. This shows how the word has evolved from a purely negative or neutral mental state into a tool for emphatic agreement in its negative form.

اگر به چیزی شک کردی، حتماً سوال بپرس. (If you doubted something, definitely ask a question.)

آن‌ها به انگیزه‌های واقعی او شک کردند. (They doubted his real motives.)

Advanced Usage: Suspicion
When 'Shek' implies suspicion of a crime, it is often paired with 'maznun shodan' (becoming a suspect). However, 'be kasi shek kardan' is the active way to say 'to suspect someone'.

نباید به همه شک کرد؛ دنیا هنوز آدم‌های خوب دارد. (One should not doubt everyone; the world still has good people.)

The word شک کردن is ubiquitous in Iranian life, appearing in everything from high-stakes political debates to mundane kitchen conversations. One of the most common places you will hear it is in the news. Journalists often use it when reporting on international relations or economic forecasts—for instance, 'Analysts doubt the stability of the market.' In the realm of Iranian cinema and television, particularly in the popular 'social drama' genre, doubt is a central theme. Characters are frequently shown doubting their spouses, their business partners, or even their own memories. This reflects a broader cultural preoccupation with the 'Zaher' (apparent) versus the 'Baten' (hidden/inner) truth. Because Iranians are culturally attuned to looking for deeper meanings behind words, the act of 'Shek Kardan' is a constant mental process.

In the Bazaar
You might hear a shopper say, 'Be gheymatesh shek daram' (I doubt its price), suggesting they think the price is unfair or the item is counterfeit.

مردم به وعده‌های مسئولین شک کرده‌اند. (The people have doubted the officials' promises.)

In Literature
Modern Persian poetry often uses 'Shek' to describe the existential crisis of the modern individual. It is portrayed as a painful but necessary step toward enlightenment.

Another frequent context is religious or philosophical discourse. Persian history is full of thinkers like Al-Ghazali who famously documented their 'Shek' as a path to finding God. In modern academic settings in Iran, students are encouraged to 'Shek kardan' in established theories to foster critical thinking. You will also hear it in the kitchen or at the dinner table—'Be tazegi-ye in morgh shek daram' (I doubt the freshness of this chicken). This demonstrates that the word is not reserved for 'big' ideas but is a tool for navigating daily life and ensuring personal safety and quality. Whether it's a mother doubting her child's excuse for being late or a scientist doubting a data point, 'Shek Kardan' is the verb that captures that universal human experience of the 'unsettled mind.'

وقتی داستانش را شنیدم، کمی شک کردم. (When I heard his story, I doubted a little.)

هیچ‌کس به فداکاری او شک نکرد. (No one doubted his sacrifice.)

Legal Context
In a courtroom, 'Shek-e Mo'ghul' (Reasonable doubt) is a phrase borrowed from international law but discussed using this core word to determine the fate of the accused.

او همیشه به همه چیز شک می‌کند؛ او یک شکاک واقعی است. (He always doubts everything; he is a real skeptic.)

For English speakers learning Persian, the most frequent mistake when using شک کردن is the omission of the preposition به (be). In English, 'doubt' is a transitive verb that takes a direct object. You 'doubt someone.' In Persian, if you say 'Man u ra shek kardam,' it sounds very broken and incorrect. You must say 'Man به u shek kardam.' Another common error is confusing 'Shek kardan' with 'Tardid kardan.' While they are often translated similarly, 'Tardid' is more about hesitation or being 'of two minds' (dudel) about a choice. For example, if you are deciding between two shirts, you have 'tardid,' not 'shek.' 'Shek' is for when you suspect the shirt is made of poor quality fabric despite the label. Using 'Shek' in a situation of simple hesitation can make you sound more suspicious or cynical than you intend to be.

Mistake: Wrong Preposition
Incorrect: من آن خبر را شک کردم. (Man an khabar ra shek kardam.)
Correct: من به آن خبر شک کردم. (Man be an khabar shek kardam.)

اشتباه: من شک کردم که بروم یا نروم. (Correct would be: تردید کردم - I hesitated whether to go or not.)

Mistake: Conjugation of Compound Verbs
Some learners try to conjugate the 'Shek' part. Remember, 'Shek' is a static noun. Only 'Kardan' changes. Incorrect: Shekidam. Correct: Shek kardam.

A subtle mistake involves the intensity of the word. 'Shek kardan' can sometimes imply that you think someone is lying. If you just want to say you aren't sure about a fact (like the date of an event), it's safer to say 'Motma'en nistam' (I am not sure). Using 'Shek kardan' in a casual factual disagreement might sound like you are questioning the person's integrity. Also, learners often forget that in the negative, the 'mi-' prefix in the present tense is replaced by 'ne-'. So, 'Shek ne-mi-konam' (I don't doubt). Some students accidentally say 'Shek mi-ne-konam' which is a common structural error in compound verbs. Lastly, be careful with the word 'Mashkuk' (suspicious). 'Shek kardan' is the action you take; 'Mashkuk' is the quality of the thing you are doubting. Don't say 'I am mashkuk' if you mean 'I am doubting'; that would mean 'I am a suspicious person'!

درست: به او شک نکن، او راست می‌گوید. (Correct: Don't doubt him, he is telling the truth.)

اشتباه: من به او مشکوک کردم. (Incorrect: Should be 'shek kardam' or 'mashkuk shodam' - I became suspicious.)

Mistake: Confusion with 'Goman'
'Goman kardan' means 'to suppose' or 'to suspect' in a more neutral way. 'Shek' is more negative. If you think it might rain, use 'Goman'. If you think someone stole your pen, use 'Shek'.

به جای «او را شک کردم»، بگویید: «به او شک کردم». (Instead of 'I doubted him [ra]', say 'I doubted TO him [be]'.)

While شک کردن is the most common way to express doubt, Persian is rich with synonyms that allow for greater precision. Understanding these alternatives will help you navigate different social registers and emotional contexts. For instance, تردید کردن (Tardid kardan) is the closest synonym but carries a sense of 'hesitation' or 'wavering.' It's often used when you are between two choices. Another powerful word is بدگمان شدن (Bad-goman shodan), which literally means 'to become bad-thinking' or to become suspicious in a negative way. This is stronger than 'Shek' and usually implies you think someone is up to no good. For a more formal or literary tone, you might use ریب داشتن (Reybe dashtan), which is often found in religious texts to describe a specific kind of corrosive doubt. If you are 'in two hearts' about something, the idiomatic دودل بودن (Du-del budan) is perfect for describing that feeling of indecision.

Tardid (تردید)
Use this for hesitation. Example: در انتخاب مسیر تردید کردم. (I hesitated in choosing the path.) It is less accusatory than 'Shek'.
Bad-goman (بدگمان)
Use this when you have a 'bad feeling' about someone's intentions. It's more emotional and less intellectual than 'Shek'.

من بین خرید این دو ماشین تردید دارم. (I am hesitating between buying these two cars.)

او نسبت به همه بدگمان است. (He is suspicious/mistrustful toward everyone.)

In a more informal setting, Iranians might use the phrase شاخک‌هایم تیز شد (my antennae sharpened), which is a funny way to say 'I started to suspect something.' If you want to describe someone who is chronically doubtful, you call them a شکاک (Shakkak) - a skeptic or a paranoid person. For the opposite of doubt, you have اطمینان داشتن (Etminan dashtan - to have confidence/certainty) and باور کردن (Bavar kardan - to believe). In scientific contexts, شک‌گرایی (Shek-garayi) is the term for Skepticism as a philosophy. By learning these variations, you can express the exact flavor of your uncertainty, whether it's a mild hesitation, a deep philosophical inquiry, or a sharp, instinctive suspicion.

او به خاطر دودل بودن فرصت را از دست داد. (He lost the opportunity because of being 'two-hearted' / indecisive.)

نباید اجازه دهیم شبهه در ذهن مردم باقی بماند. (We should not let ambiguity/doubt remain in people's minds.)

Comparison: Shek vs. Vasvas
'Vasvas' refers to obsessive doubt or OCD-like tendencies, like doubting if you locked the door multiple times. 'Shek' is more logic-based or suspicion-based.

دانشمندان به نظریه‌های قدیمی شک کردند. (Scientists doubted the old theories.)

Examples by Level

1

من شک کردم.

I doubted.

Simple past tense of a compound verb.

2

به او شک نکن.

Don't doubt him.

Negative imperative form.

3

آیا شک داری؟

Do you have doubt?

Using 'dashtan' instead of 'kardan' for state of doubt.

4

من به تو شک نمی‌کنم.

I don't doubt you.

Present negative tense.

5

او شک کرد.

He doubted.

Third person singular past tense.

6

ما شک کردیم.

We doubted.

First person plural past tense.

7

به این رنگ شک دارم.

I doubt this color.

Doubt about an object using 'be'.

8

شک نکن، بیا!

Don't doubt, come!

Imperative used for encouragement.

1

او به حرف من شک کرد.

He doubted my word.

Preposition 'be' used with a noun phrase.

2

من به تماشای این فیلم شک دارم.

I have doubt about watching this movie.

Doubt about an action (gerund-like).

3

آن‌ها به پلیس شک کردند.

They suspected the police.

Past tense plural.

4

چرا به همه شک می‌کنی؟

Why do you doubt everyone?

Present habitual question.

5

او به سلامت غذا شک کرد.

She doubted the safety of the food.

Doubt about a specific quality.

6

ما به موفقیت تیم شک داریم.

We have doubt about the team's success.

State of doubt in plural.

7

او هرگز به من شک نکرد.

He never doubted me.

Use of 'hargez' (never) with past negative.

8

به نتایج امتحان شک نکن.

Don't doubt the exam results.

Negative imperative for reassurance.

1

من شک کردم که شاید او دروغ می‌گوید.

I doubted that maybe he was lying.

Using 'ke' to introduce a subordinate clause.

2

اگر به چیزی شک داری، حتماً بپرس.

If you have doubt about something, definitely ask.

Conditional 'agar' sentence.

3

او به انگیزه‌های واقعی مدیر شک کرد.

He doubted the manager's real motives.

Using complex noun phrases with 'be'.

4

نباید به توانایی‌های خودت شک کنی.

You shouldn't doubt your own abilities.

Modal 'nabayad' (shouldn't) with subjunctive.

5

پلیس به راننده مشکوک شد و به او شک کرد.

The police became suspicious and doubted him.

Distinguishing between 'mashkuk shodan' and 'shek kardan'.

6

او به درستی این خبر شک کرده است.

He has doubted the correctness of this news.

Present perfect tense.

7

هیچ‌کس به فداکاری‌های او شک نمی‌کند.

No one doubts his sacrifices.

Negative present tense with 'hich-kas'.

8

من به آینده این شرکت شک دارم.

I have doubt about the future of this company.

Expressing professional skepticism.

1

وقتی شواهد را دیدم، به بی‌گناهی او شک کردم.

When I saw the evidence, I doubted his innocence.

Complex sentence with time clause.

2

او به جای تردید، شروع به شک کردن به همه کرد.

Instead of hesitating, he started doubting everyone.

Comparing 'tardid' and 'shek kardan' in a sentence.

3

شک کردن اولین قدم برای رسیدن به حقیقت است.

Doubting is the first step to reaching the truth.

Using the infinitive 'shek kardan' as a subject.

4

او به تمامی فرضیات علمی شک کرده بود.

He had doubted all scientific assumptions.

Past perfect tense.

5

با شنیدن حرف‌های متناقضش، به او شک کردم.

By hearing his contradictory words, I doubted him.

Using a gerund-like structure (ba shenidan).

6

آیا به عدالت این تصمیم شک کرده‌ای؟

Have you doubted the justice of this decision?

Present perfect question about an abstract concept.

7

او بدون اینکه شک کند، قرارداد را امضا کرد.

Without doubting, he signed the contract.

Using 'bedune inke' with subjunctive.

8

این موضوع باعث شد به همه چیز شک کنم.

This matter caused me to doubt everything.

Causative structure with 'ba'es shodan'.

1

منتقدین به اعتبار این سند تاریخی شک کردند.

Critics doubted the validity of this historical document.

Formal academic usage.

2

او در کتابش به مبانی اخلاقی جامعه شک می‌کند.

In his book, he doubts the moral foundations of society.

Present tense used for literary analysis.

3

نباید اجازه دهیم شک و تردید بر ما غلبه کند.

We should not let doubt and hesitation overcome us.

Using 'shek va tardid' as a pair.

4

او به هر چیزی که در اخبار می‌شنید شک می‌کرد.

He used to doubt everything he heard in the news.

Past habitual (imperfect) tense.

5

شک کردن به سنت‌ها بخشی از مدرنیته است.

Doubting traditions is a part of modernity.

Sociological usage of the verb.

6

پژوهشگران به صحت داده‌های آماری شک کرده‌اند.

Researchers have doubted the accuracy of the statistical data.

Present perfect in a scientific context.

7

او چنان شکاک بود که به سایه خودش هم شک می‌کرد.

He was so skeptical that he even doubted his own shadow.

Idiomatic exaggeration using 'chenan... ke'.

8

این واقعه باعث شد به تمام باورهایم شک کنم.

This event caused me to doubt all my beliefs.

Deep personal reflection.

1

فیلسوف به ماهیت واقعیت شک کرد تا به یقین برسد.

The philosopher doubted the nature of reality to reach certainty.

Philosophical usage of 'Shek' vs 'Yaghin'.

2

هرگونه شک کردن به این موضوع، عواقب سنگینی دارد.

Any kind of doubting this matter has heavy consequences.

Using 'har-gune' for emphasis.

3

او در لایه‌های پنهان متن، به نیت نویسنده شک کرد.

In the hidden layers of the text, he doubted the author's intent.

Advanced literary criticism.

4

شک کردن‌های مداوم او باعث فروپاشی رابطه شد.

His constant doubtings caused the collapse of the relationship.

Pluralizing the infinitive to show repetition.

5

او به مشروعیت کل سیستم سیاسی شک کرده بود.

He had doubted the legitimacy of the entire political system.

Political science terminology.

6

با وجود تمام مدارک، باز هم به او شک می‌کردند.

Despite all the evidence, they still doubted him.

Using 'ba vojud-e' (despite).

7

شک کردن به پارادایم‌های حاکم، لازمه‌ی پیشرفت است.

Doubting the dominant paradigms is necessary for progress.

High-level intellectual discourse.

8

او به ظرافت تمام، به ادعاهای رقیب شک کرد.

With total subtlety, he doubted his rival's claims.

Describing the manner of doubting.

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