At the A1 level, you don't need to use 'bi-asar' often, but it's good to recognize it. Think of it as 'not working'. In Persian, we have the prefix 'bi-' which means 'without'. 'Asar' means 'effect'. So 'bi-asar' is 'without effect'. If you have a toy that needs batteries and it doesn't move, you can say it's 'bi-asar' if you try to fix it but fail. At this stage, focus on the fact that 'bi-' makes things opposite. Just like 'bi-pool' means 'no money', 'bi-asar' means 'no effect'. You might hear it in simple stories where a magic spell doesn't work or a person's words are ignored. It's a compound word, which is a very common way to build vocabulary in Persian. Try to remember it as a single unit meaning 'useless' or 'ineffective'.
By A2, you are learning more adjectives to describe the world. 'Bi-asar' is a great word for when things don't go as planned. You can use it to describe a medicine that didn't help your cold: 'In daru bi-asar bud' (This medicine was ineffective). Notice how it comes before the verb 'bud' (was). You can also use it to describe a rule that nobody follows. At this level, you should also notice that 'asar' can mean 'trace' or 'mark'. So, if you clean a window and there are no marks left, you might say it's 'bi-asar' of dirt, although this is less common than the 'ineffective' meaning. It's a step up from 'bad' (bad) or 'kharab' (broken). It describes the *result* of an action.
At the B1 level, you should be able to use 'bi-asar' in various contexts like medicine, law, and personal relationships. You understand that it is more formal than 'bi-faydeh'. You can use it to talk about social issues, such as 'The efforts of the police were ineffective' (Talashe police bi-asar bud). You should also be comfortable using it with the Ezafe: 'yeki az ravesh-haye bi-asar' (one of the ineffective methods). This is the level where you start to distinguish between 'bi-asar' (no impact) and 'bi-natijeh' (no result). A meeting can be 'bi-natijeh' if no decision was made, but a speech is 'bi-asar' if it didn't change anyone's mind. It's a key word for expressing dissatisfaction in a sophisticated way.
At B2, you should use 'bi-asar' to discuss more abstract and complex topics. For example, in an essay about the environment, you might write about how certain laws are 'bi-asar' due to lack of enforcement. You can also use it in the context of chemistry or science to describe non-reactive substances or neutralized forces. You should be aware of synonyms like 'khonsa' (neutral) and 'abas' (futile) and know when to choose 'bi-asar' over them. You might also encounter it in legal documents where a clause is described as 'bi-asar' if it conflicts with a higher law. Your usage should be precise, showing you understand that 'bi-asar' specifically targets the failure of a cause to produce its intended effect.
At the C1 level, you will encounter 'bi-asar' in classical and modern literature. You'll see how poets use the concept of an 'ineffective sigh' (aah-e bi-asar) to show the pain of unrequited love. You should be able to use the word in high-level debates about history or philosophy. For example, discussing whether a historical revolution was 'bi-asar' in the long run. You should also understand the nuance of using it as a double negative: 'bi-asar nabudan' (not being ineffective), which is a common rhetorical device in Persian to emphasize a modest impact. Your vocabulary should now include related terms like 'bi-ta'sir' (synonym) and 'mo'asser' (antonym), and you should be able to switch between them to avoid repetition in long texts.
At the C2 level, 'bi-asar' is a word you use with total mastery of its connotations. you understand its place in the legal terminology of 'null and void' and its philosophical implications regarding the 'void'. You can analyze why a writer chose 'bi-asar' instead of ' سترون' (sterile/fruitless) or 'لغو' (cancelled). You are aware of its use in scientific papers regarding 'inert' environments. You can use it to describe the subtle failure of a diplomatic gesture or the way a memory becomes 'bi-asar' (loses its emotional sting) over decades. At this level, you don't just know what the word means; you know the weight it carries in the history of Persian thought, from the rationalism of Avicenna to the modern social critiques of Sadegh Hedayat.

بی‌اثر in 30 Seconds

  • Bi-asar means 'ineffective' or 'without effect' in Persian.
  • It is a compound of the prefix 'bi-' (without) and 'asar' (effect).
  • Commonly used for medicines, laws, and failed personal efforts.
  • It is a formal and standard B1-level vocabulary word.

The Persian word بی‌اثر (bi-asar) is a versatile adjective that essentially translates to 'ineffective', 'useless', or 'futile' in English. Morphologically, it is a compound word consisting of the privative prefix بی- (bi-), meaning 'without', and the noun اثر (asar), which means 'effect', 'trace', or 'impression'. Therefore, its literal meaning is 'without effect'. In the tapestry of the Persian language, this word serves as a critical tool for describing situations where an action, a substance, or an argument fails to produce the desired or expected outcome. Whether you are discussing a medical treatment that didn't work, a law that is no longer enforced, or a piece of advice that was ignored, بی‌اثر is the standard term to employ. It carries a sense of neutrality in many contexts, but it can also lean toward frustration when used to describe wasted effort.

Literal Meaning
Without effect or trace; null and void.
Usage Context
Commonly used in medical, legal, and interpersonal discussions to denote failure of impact.

In a medical context, if a patient takes a painkiller and the pain persists, the doctor might describe the medication as bi-asar. In legal terms, a contract that has expired or been invalidated is often described as bi-asar, meaning it no longer carries any weight or power. Culturally, Persians often value the 'asar' (impact) of one's words; hence, calling someone's speech bi-asar suggests that their words lack authority or the power to influence others. This nuance makes it a powerful word in rhetoric and daily arguments.

تلاش‌های او برای راضی کردن مدیر بی‌اثر بود.
(His efforts to convince the manager were ineffective.)

Understanding this word also requires understanding the prefix 'bi-'. In Persian, 'bi-' is a prolific prefix used to create opposites. Just as 'un-' or 'less' works in English, 'bi-' negates the noun it precedes. By learning bi-asar, you are also learning a pattern that applies to hundreds of other words like bi-faydeh (useless) or bi-khab (sleepless). However, bi-asar specifically targets the 'result' or the 'impression' left by an entity. If a storm passes but leaves no damage, one might say the storm was bi-asar. If a teacher speaks but the students don't listen, the lesson is bi-asar. It is a word that measures the gap between intent and reality.

Furthermore, in the realm of chemistry or science, a substance that does not react with another can be called bi-asar. For instance, noble gases are often described in a way that implies they are chemically 'ineffective' or non-reactive in certain environments. This scientific application broadens the word's utility from emotional or legal spheres into the hard sciences. When you use this word, you are commenting on the efficacy of a system. It is a diagnostic word, one that identifies a failure in the chain of cause and effect. If 'A' is supposed to lead to 'B', but 'B' does not occur, then 'A' is bi-asar.

این قانون در حال حاضر در جامعه بی‌اثر است.
(This law is currently ineffective in society.)

In summary, bi-asar is a fundamental B1-level word because it allows learners to express disappointment, describe scientific results, and discuss legal or social status. It is more formal than الکی (alaki - fake/useless) but less poetic than بی‌ثمر (bi-samar - fruitless). Mastering its use involves recognizing that it is an adjective that can follow the verb 'to be' (budan) or modify a noun directly using the Ezafe construction (e.g., daruye bi-asar). It is a staple of news broadcasts, medical consultations, and workplace evaluations.

Using بی‌اثر correctly involves understanding its role as an adjective. In Persian grammar, adjectives usually follow the noun they modify, connected by the Ezafe (the short 'e' sound). For example, to say 'an ineffective medicine', you would say daru-ye bi-asar. Alternatively, it can function as a predicate adjective at the end of a sentence, such as in daru bi-asar ast (this medicine is ineffective). This section explores the various syntactic roles and common pairings of the word to ensure you can use it naturally in conversation and writing.

Attributive Use
Noun + -e + بی‌اثر (e.g., حرفِ بی‌اثر - ineffective word)
Predicative Use
Subject + بی‌اثر + Verb (e.g., داروها بی‌اثر بودند - The medicines were ineffective)

When discussing actions or efforts, bi-asar is often paired with nouns like talash (effort), eghdam (action), or sokhan (speech). If you want to emphasize that something was completely useless, you might add an intensifier like kamalan (completely), resulting in kamalan bi-asar. This is particularly common in formal reports or news stories. For instance, 'The international sanctions were completely ineffective' would be tahrim-haye beinolmelali kamalan bi-asar budand.

تمام نقشه‌های آن‌ها برای فرار بی‌اثر ماند.
(All their plans to escape remained ineffective/futile.)

Another interesting usage is in the context of time. Sometimes a change or a law becomes bi-asar over time. In this case, we use the verb shodan (to become). In ghanun ba gozashte zaman bi-asar shod (This law became ineffective with the passage of time). This highlights the temporal aspect of the word—something that once had an 'asar' (impact) can lose it. In contrast, if something never had an effect to begin with, we use budan (to be).

In more advanced Persian, you might see the word used to describe people, although this is less common than describing things. Calling a person bi-asar implies they have no influence or presence in a group. It’s a way of saying they are 'background noise' or inconsequential. However, be careful as this can be quite insulting. It's much safer and more common to apply it to abstract concepts like 'advice' (nasihat) or 'protests' (eterazat).

گریه‌های کودک برای گرفتن شکلات بی‌اثر بود.
(The child's cries to get chocolate were ineffective.)

Lastly, consider the negative construction. If you want to say something is *not* ineffective, you would say bi-asar nist. This is a common way to use a double negative to imply that something actually has a small but noticeable effect. 'Your help was not ineffective' (komake shoma bi-asar nabud) is a polite way of acknowledging someone's contribution, even if it wasn't the primary cause of success. This demonstrates the flexibility of the word in managing social dynamics and expectations.

You will encounter بی‌اثر in a variety of real-world settings in Iran and Persian-speaking communities. One of the most frequent places is in the evening news. News anchors often use it when reporting on government policies, international treaties, or economic measures that have failed to yield results. When a new economic plan doesn't curb inflation, journalists will inevitably describe it as bi-asar. This makes it an essential word for anyone who wants to follow Iranian current events or read Persian newspapers like Ettela'at or Shargh.

News & Media
Reporting on failed policies, sanctions, or diplomatic efforts.
Pharmacy & Clinics
Discussing medications that don't work for a specific ailment.

Another common setting is the doctor's office. Patients in Iran are often very vocal about their symptoms and the efficacy of their treatments. You might hear a patient say, In ghors-ha baraye man bi-asar hastand (These pills are ineffective for me). Doctors also use the term to explain that a certain treatment won't work for a specific condition. It is a key term in the medical lexicon, bridging the gap between professional diagnosis and patient feedback. If you are living in an Iranian city, you'll likely hear this word at least once a week in the context of health or pharmacy visits.

دکتر گفت که این پماد روی عفونت بی‌اثر است.
(The doctor said this ointment is ineffective on the infection.)

In the educational system, teachers use bi-asar to describe study habits or teaching methods that aren't producing high grades. A teacher might tell a student, Raveshe dars khondane to bi-asar ast (Your way of studying is ineffective). This usage is quite direct and aims to push the student toward a better strategy. Similarly, in Persian literature and poetry, the word appears when discussing the 'sighs' of a lover that have no effect on the beloved's heart. This shows the word's transition from mundane daily use to the heights of classical Persian expression.

In the workplace, bi-asar is used during performance reviews or strategy meetings. If a marketing campaign didn't increase sales, it is labeled bi-asar. It is a professional way to say 'it didn't work' without necessarily blaming a specific person. It focuses on the *result* rather than the *effort*. This distinction is important in Persian culture, where maintaining 'aaberu' (face/reputation) is vital. By calling the *effort* or the *plan* bi-asar, one can criticize the outcome without directly attacking the individual's character.

تبلیغات تلویزیونی برای این محصول بی‌اثر بوده‌اند.
(The TV advertisements for this product have been ineffective.)

Finally, you will hear this word in legal and administrative contexts. If a document is missing a stamp or a signature, it is bi-asar. If a contract has expired, it is bi-asar. In the labyrinthine bureaucracy of Iran, knowing when something is 'bi-asar' can save you a lot of time and trouble. It signals that you need to take a different action or get a new document. Whether you are at a bank, a police station, or a government office, this word is a signal to stop and recalibrate your approach.

One of the most frequent mistakes English speakers make when learning بی‌اثر is confusing it with other similar words like بی‌فایده (bi-faydeh) or بیهوده (bihudeh). While they all translate generally to 'useless', there are distinct differences. Bi-faydeh means something has no benefit or profit. For example, a broken toy is bi-faydeh. However, bi-asar means something failed to produce a specific *change* or *impact*. If you take a medicine and it doesn't cure you, it is bi-asar. If you take a medicine and it cures you but you don't like the taste, it's not bi-asar, but it might be bi-faydeh in your opinion.

Bi-asar vs. Bi-faydeh
'Bi-asar' is about lack of impact/result; 'Bi-faydeh' is about lack of utility/benefit.
Bi-asar vs. Batel
'Batel' is specifically for legal nullification (void), while 'bi-asar' is broader.

Another mistake involves the word batel. In English, we might say a contract is 'ineffective' or 'void'. In Persian, batel is the technical legal term for 'void' or 'cancelled'. While a batel contract is also bi-asar, you wouldn't usually use bi-asar to describe a ticket that has been punched or a coupon that has been used. You would use batel. Use bi-asar for things that *should* work but don't, or for things that have lost their power to influence.

اشتباه: این بلیط بی‌اثر است. (Correct: باطل است)
(Mistake: This ticket is 'bi-asar'. Correct: It is 'batel'/void.)

Grammatically, learners sometimes forget the Ezafe when using it as an attribute. They might say daru bi-asar instead of daru-ye bi-asar. Remember that Persian adjectives need that connecting vowel. Also, avoid using bi-asar to mean 'empty' or 'blank'. If a paper has nothing written on it, it's not bi-asar; it's sefid (white/blank). The word 'asar' implies a trace or mark, so 'bi-asar' literally means 'traceless', but in modern usage, it's almost always about 'effect'.

Finally, be careful with the intensity. Since bi-asar is an absolute state (it either has an effect or it doesn't), some purists argue you shouldn't say 'very ineffective' (kheyli bi-asar). However, in colloquial Persian, this is common. To be more precise, you can use kam-asar (low effect) if something has a small impact, or bi-asar if it has none at all. Choosing between kam-asar and bi-asar shows a higher level of Persian proficiency and prevents you from sounding like you are exaggerating.

نصیحت‌های او کاملاً بی‌اثر بود.
(His advice was completely ineffective.)

In summary, the key to avoiding mistakes is to focus on the 'impact' aspect. Ask yourself: 'Is there a result?' If the answer is no, bi-asar is likely the right word. If the answer is 'yes, but it's bad', then bi-asar is wrong. If the answer is 'it's legally dead', batel might be better. Keeping these distinctions in mind will help you sound more like a native speaker and less like a translation app.

Persian is a language rich in synonyms, and بی‌اثر is no exception. Depending on the register and the specific nuance you want to convey, you might choose a different word. The most common alternative is بی‌فایده (bi-faydeh), which we've discussed as meaning 'useless' or 'without benefit'. It’s the go-to word for daily life. If your umbrella is broken and you're getting wet, it's bi-faydeh. If you're using a repellent but mosquitoes are still biting you, the repellent is bi-asar.

خنثی (Khonsa)
Neutral or neutralized. Used for bombs, chemicals, or political stances.
عبث (Abas)
Vain or futile. Often used in philosophical or literary contexts for wasted life or effort.
بی‌ثمر (Bi-samar)
Fruitless. Literally 'without fruit'. Used for projects or long-term efforts.

For more formal or literary situations, عبث (abas) is a beautiful choice. It conveys a deeper sense of existential futility. If a character in a movie is trying to change their destiny but fails, their struggle is abas. On the other hand, بی‌ثمر (bi-samar) is often used for trees that don't bear fruit, but metaphorically it applies to business ventures or educational pursuits that don't yield a 'harvest' of results.

تلاش‌های ما برای صلح بی‌ثمر ماند.
(Our efforts for peace remained fruitless.)

In a technical or political sense, خنثی (khonsa) is a great alternative. It means 'neutral' or 'neutralized'. When a threat is removed, it is khonsa. When a chemical reaction is balanced, it is khonsa. This word implies that an active force was intentionally made bi-asar. While bi-asar might happen by accident (the medicine just didn't work), khonsa often implies an action was taken to make it so.

Finally, consider لغو (laghv), which means 'cancelled' or 'nullified'. This is used for events, laws, or appointments. If a meeting is laghv, it didn't happen. If it happened but nothing was decided, it was bi-asar. Understanding these subtle shifts in meaning will allow you to describe the world with the precision of a native speaker. Each of these words covers a different corner of the concept of 'not working', and bi-asar sits right in the middle as the most common and versatile choice.

این دارو اثر داروهای دیگر را خنثی می‌کند.
(This medicine neutralizes the effect of other medicines.)

How Formal Is It?

Fun Fact

The root 'asar' in Arabic originally referred to the tracks left by camels in the desert. Thus, 'bi-asar' is like a path where no tracks were left.

Pronunciation Guide

UK /biː.æ.sær/
US /biː.æ.sær/
The stress is on the last syllable: bi-aSAR.
Rhymes With
همسر (hamsar) دفتر (daftar) سفر (safar) خبر (khabar) خطر (khatar) پیکر (peykar) رهبر (rahbar) منظر (manzar)
Common Errors
  • Pronouncing 'bi' as 'bye'.
  • Stress on the first syllable.
  • Merging the 'i' and 'a' into a single sound.
  • Not pronouncing the final 'r' clearly.
  • Confusing the short 'a' in 'asar' with a long 'aa'.

Difficulty Rating

Reading 3/5

Easy to recognize due to the 'bi-' prefix pattern.

Writing 4/5

Requires correct spelling of 'asar' (with Alef and Se).

Speaking 3/5

Simple pronunciation, but requires correct stress.

Listening 3/5

Common in news and medical contexts.

What to Learn Next

Prerequisites

بی اثر بودن دارو تلاش

Learn Next

موثر خنثی باطل فایده نتیجه

Advanced

سترون لغو فسخ عبث بیهوده

Grammar to Know

Privative prefix 'bi-'

بی + پول = بی‌پول (Without money)

Ezafe Construction

تلاشِ بی‌اثر (Ineffective effort)

Compound Verbs with 'shodan'

بی‌اثر شدن (To become ineffective)

Adjective Position

Persian adjectives usually follow the noun.

Intensifiers with Adjectives

بسیار بی‌اثر (Very ineffective)

Examples by Level

1

این دارو بی‌اثر است.

This medicine is ineffective.

Simple Subject + Adjective + Verb structure.

2

حرف‌های او بی‌اثر بود.

His words were ineffective.

Plural subject with singular adjective.

3

تلاش من بی‌اثر شد.

My effort became ineffective.

Using 'shodan' (to become) instead of 'budan'.

4

آیا این کرم بی‌اثر است؟

Is this cream ineffective?

Question form with 'aya'.

5

آن‌ها بی‌اثر هستند.

They are ineffective.

Plural verb 'hastand'.

6

این کلید بی‌اثر است.

This key is ineffective (doesn't work).

Describing a tool's failure.

7

آب گرم بی‌اثر بود.

The hot water was ineffective.

Past tense 'bud'.

8

چرا این روش بی‌اثر است؟

Why is this method ineffective?

Using the question word 'chera'.

1

قرص‌ها برای سردرد من بی‌اثر بودند.

The pills were ineffective for my headache.

Using 'baraye' (for) to specify the context.

2

او یک نقشه بی‌اثر داشت.

He had an ineffective plan.

Attributive use with Ezafe.

3

نصیحت پدرم بی‌اثر ماند.

My father's advice remained ineffective.

Using 'mandan' (to remain) as a linking verb.

4

این باتری بی‌اثر شده است.

This battery has become ineffective (dead).

Present perfect 'shodeh ast'.

5

تلاش برای باز کردن در بی‌اثر بود.

The effort to open the door was ineffective.

Infinitive 'baz kardan' as part of the subject.

6

فریادهای او در کوه بی‌اثر بود.

His shouts in the mountain were ineffective (no one heard).

Prepositional phrase 'dar kooh'.

7

این رنگ برای دیوار بی‌اثر است.

This paint is ineffective for the wall (doesn't cover).

Describing physical properties.

8

کمک‌های کوچک گاهی بی‌اثر هستند.

Small helps are sometimes ineffective.

Using the adverb 'gahi' (sometimes).

1

تحریم‌ها علیه این کشور بی‌اثر بوده‌اند.

The sanctions against this country have been ineffective.

Political context, present perfect plural.

2

دکتر گفت که جراحی ممکن است بی‌اثر باشد.

The doctor said the surgery might be ineffective.

Subjunctive mood 'bashad' after 'momken ast'.

3

تمام اقدامات امنیتی بی‌اثر ماندند.

All security measures remained ineffective.

Formal noun 'eghdamat' (measures).

4

این قانون قدیمی در جامعه امروز بی‌اثر است.

This old law is ineffective in today's society.

Temporal contrast 'ghadimi' vs 'emruz'.

5

او سعی کرد بخندد، اما تلاشش بی‌اثر بود.

He tried to laugh, but his effort was ineffective.

Compound sentence with 'ama' (but).

6

تاکتیک‌های مربی در نیمه دوم بی‌اثر بود.

The coach's tactics were ineffective in the second half.

Sports context.

7

اعتراضات دانشجویان به نظر بی‌اثر می‌رسید.

The students' protests seemed to be ineffective.

Using 'be nazar residan' (to seem).

8

این پماد روی جای زخم بی‌اثر است.

This ointment is ineffective on the scar.

Specific medical application.

1

داروهای گیاهی روی این بیماری خاص بی‌اثر هستند.

Herbal medicines are ineffective on this specific disease.

Scientific/Medical nuance.

2

نفوذ او در اداره به تدریج بی‌اثر شد.

His influence in the office gradually became ineffective.

Abstract concept 'nofuz' (influence).

3

بیانات تند وزیر در حل بحران بی‌اثر بود.

The minister's sharp statements were ineffective in solving the crisis.

Formal vocabulary 'bayanat' (statements).

4

سیستم‌های دفاعی در برابر موشک‌های جدید بی‌اثرند.

The defense systems are ineffective against the new missiles.

Military context, contracted 'and' for 'hastand'.

5

تلاش‌های دیپلماتیک برای جلوگیری از جنگ بی‌اثر ماند.

Diplomatic efforts to prevent the war remained ineffective.

Collocation 'talash-haye diplomati'.

6

این ماده شیمیایی در محیط اسیدی بی‌اثر است.

This chemical substance is ineffective in an acidic environment.

Technical/Scientific context.

7

فشارهای اقتصادی بر اراده مردم بی‌اثر بود.

Economic pressures were ineffective on the people's will.

Sociological context.

8

به نظر می‌رسد که این استراتژی در درازمدت بی‌اثر باشد.

It seems that this strategy will be ineffective in the long run.

Complex sentence with 'dar deraz-moddat'.

1

منطق در برابر تعصب کورکورانه غالباً بی‌اثر است.

Logic is often ineffective against blind prejudice.

Philosophical observation.

2

آه و ناله مظلومان در دل سنگ او بی‌اثر بود.

The sighs and moans of the oppressed were ineffective on his heart of stone.

Literary/Poetic style.

3

این اصلاحات سطحی در ساختار قدرت بی‌اثر خواهند بود.

These superficial reforms will be ineffective in the power structure.

Future tense 'khahand bud'.

4

برخی معتقدند که هنر در جوامع استبدادی بی‌اثر می‌شود.

Some believe that art becomes ineffective in autocratic societies.

Complex subordinate clause.

5

توجیهات او برای تأخیر، کاملاً بی‌اثر و مضحک بود.

His justifications for the delay were completely ineffective and ridiculous.

Using multiple adjectives.

6

نیروی جاذبه در فواصل بسیار دور تقریباً بی‌اثر است.

Gravity is almost ineffective at very long distances.

Scientific precision.

7

سکوت او به معنای پذیرش نبود، بلکه سلاحی بی‌اثر بود.

His silence didn't mean acceptance, but was an ineffective weapon.

Metaphorical use.

8

تلاش برای تغییر گذشته، عملی بی‌اثر و فرساینده است.

Trying to change the past is an ineffective and eroding act.

Gerund-like subject 'talash baraye...'.

1

در ساحت عرفان، کلمات در توصیف حقیقت بی‌اثر می‌نمایند.

In the realm of mysticism, words appear ineffective in describing the truth.

High-level vocabulary 'saahat', 'minomayand'.

2

این قرارداد به دلیل عدم رعایت تشریفات قانونی، از ابتدا بی‌اثر بود.

This contract was ineffective from the beginning due to failure to follow legal formalities.

Legal terminology 'tashrifat-e ghanuni'.

3

دیالکتیک او در مواجهه با واقعیت‌های سخت، بی‌اثر جلوه کرد.

His dialectic appeared ineffective in the face of harsh realities.

Academic phrasing 'jelveh kard'.

4

تأثیرات روانی این واقعه بر نسل‌های بعدی بی‌اثر نخواهد بود.

The psychological effects of this event on future generations will not be ineffective.

Double negative for emphasis.

5

مقاومت در برابر جریان تاریخ، تلاشی بی‌اثر و محکوم به شکست است.

Resistance against the flow of history is an ineffective effort doomed to failure.

Historical/Philosophical register.

6

ساختار زبانی این متن، ترجمه را تا حدی بی‌اثر می‌سازد.

The linguistic structure of this text makes translation somewhat ineffective.

Causative structure 'bi-asar misazad'.

7

پروپاگاندای دولتی در میان قشر تحصیل‌کرده بی‌اثر شده است.

Government propaganda has become ineffective among the educated class.

Sociopolitical analysis.

8

بی‌اثر کردن سموم در بدن، وظیفه اصلی کبد است.

Neutralizing (making ineffective) toxins in the body is the main task of the liver.

Using the word as part of a gerund phrase.

Common Collocations

داروی بی‌اثر
تلاش بی‌اثر
قانون بی‌اثر
حرف بی‌اثر
تحریم‌های بی‌اثر
کاملاً بی‌اثر
بی‌اثر کردن
بی‌اثر ماندن
بی‌اثر شدن
نقشه بی‌اثر

Common Phrases

بی‌اثر بودن

— To be ineffective. Used in 80% of cases.

این روش بی‌اثر بود.

بی‌اثر شدن قانون

— A law losing its power or enforcement.

این قانون سال گذشته بی‌اثر شد.

بی‌اثر کردن سم

— Neutralizing a poison.

پادزهر سم را بی‌اثر کرد.

تلاش‌های بی‌اثر دیپلماتیک

— Failed diplomatic attempts.

تلاش‌های بی‌اثر دیپلماتیک ادامه دارد.

داروی بی‌اثر نما

— Placebo (literally: medicine looking ineffective/neutral).

او داروی بی‌اثر نما مصرف کرد.

بی‌اثر ماندن اعتراض

— When a protest achieves nothing.

اعتراض آن‌ها بی‌اثر ماند.

بی‌اثر در برابر بیماری

— Ineffective against a disease.

بدن او در برابر ویروس بی‌اثر بود.

حرف‌های بی‌اثر و پوچ

— Ineffective and empty words.

او فقط حرف‌های بی‌اثر می‌زند.

بی‌اثر کردن اثر انگشت

— Removing or neutralizing fingerprints.

او سعی کرد اثر انگشت را بی‌اثر کند.

بی‌اثر از لحاظ قانونی

— Ineffective from a legal standpoint.

این سند بی‌اثر از لحاظ قانونی است.

Often Confused With

بی‌اثر vs بی‌خبر

Means 'unaware' or 'without news'. Sounds similar but unrelated.

بی‌اثر vs بی‌بصر

Means 'blind' or 'without vision'. Very rare, literary.

بی‌اثر vs بی‌ثمر

Means 'fruitless'. Very close, but bi-samar is more about 'growth' and 'harvest'.

Idioms & Expressions

"آب در هاون کوبیدن"

— To grind water in a mortar. Doing something completely futile and ineffective.

نصیحت کردن او مثل آب در هاون کوبیدن است.

Colloquial
"تیرش به سنگ خورد"

— His arrow hit a rock. His plan or effort was ineffective/failed.

خواست مرا فریب دهد اما تیرش به سنگ خورد.

Colloquial
"نقش بر آب شدن"

— To become a painting on water. For a plan to become ineffective/vanish.

تمام نقشه‌هایش نقش بر آب شد.

Poetic/Common
"درِ دیزی باز است، حیای گربه کجاست؟"

— The pot is open, where is the cat's shame? Used when rules are ineffective because people have no morals.

وقتی قانون بی‌اثر باشد، هر کسی هر کاری می‌کند.

Proverb
"نرود میخ آهنین در سنگ"

— An iron nail won't go into stone. Advice is ineffective on a stubborn person.

به او نصیحت نکن، نرود میخ آهنین در سنگ.

Literary
"رشته‌ها پنبه شدن"

— Threads becoming cotton again. All efforts becoming ineffective/undone.

با یک اشتباه، تمام رشته‌هایم پنبه شد.

Common
"دود از کنده بلند می‌شود"

— Smoke comes from the log. Used to say old things aren't bi-asar (they still have impact).

فکر نکن او پیر و بی‌اثر است، دود از کنده بلند می‌شود.

Proverb
"بزک نمیر بهار میاد"

— Don't die little goat, spring is coming. Used for ineffective promises of future help.

وعده‌های او مثل بزک نمیر بهار میاد است.

Sarcastic
"دستش به دهنش نمی‌رسد"

— His hand doesn't reach his mouth. Being ineffective due to poverty.

او می‌خواهد کمک کند اما دستش به دهنش نمی‌رسد.

Colloquial
"بی‌اثر چون باد"

— Ineffective like the wind. Something that passes without leaving a trace.

عمر ما بی‌اثر چون باد می‌گذرد.

Poetic

Easily Confused

بی‌اثر vs باطل

Both can mean 'useless' in a legal sense.

Batel is for 'void' (like a ticket); Bi-asar is for 'ineffective' (like a plan).

بلیط باطل است، اما تلاش برای استفاده از آن بی‌اثر بود.

بی‌اثر vs بیهوده

Both translate to 'useless'.

Bihudeh implies a lack of purpose; Bi-asar implies a lack of result.

تلاش بیهوده یعنی تلاشی که از اول نباید انجام می‌شد.

بی‌اثر vs خنثی

Both mean 'no effect'.

Khonsa is often a state of balance or intentional neutralization.

او بمب را خنثی کرد تا بی‌اثر شود.

بی‌اثر vs بی‌فایده

Most common synonym.

Bi-faydeh is 'no benefit'; Bi-asar is 'no impact'.

این کتاب بی‌فایده است (چیزی یاد نمی‌دهد)، این دارو بی‌اثر است (درد را نمی‌برد).

بی‌اثر vs لغو

Both mean 'null'.

Laghv is for events/cancellations; Bi-asar is for the state of being ineffective.

جلسه لغو شد.

Sentence Patterns

A1

[Subject] [bi-asar] [ast/bud].

این دارو بی‌اثر بود.

A2

[Noun]-e [bi-asar]

تلاشِ بی‌اثر

B1

[Subject] [bi-asar] [shodeh ast].

قانون بی‌اثر شده است.

B2

[Subject] در برابر [Something] [bi-asar] ast.

این ماده در برابر حرارت بی‌اثر است.

C1

[Action] [bi-asar] [be nazar residan].

اعتراضات بی‌اثر به نظر می‌رسید.

C1

[Subject] را [bi-asar] kardan.

دشمن را بی‌اثر کردند.

C2

از لحاظ [Legal/Scientific], [Subject] [bi-asar] ast.

از لحاظ حقوقی، این سند بی‌اثر است.

C2

[Double Negative] bi-asar nabudan.

کمک‌های او بی‌اثر نبود.

Word Family

Nouns

اثر (Effect/Trace)
تأثیر (Influence)
مؤثر بودن (Effectiveness)

Verbs

اثر کردن (To have an effect)
تأثیر گذاشتن (To influence)
بی‌اثر کردن (To neutralize)

Adjectives

مؤثر (Effective)
بااثر (Having effect)
بی‌اثر (Ineffective)

Related

نتیجه (Result)
فایده (Benefit)
ثمر (Fruit/Result)
پادزهر (Antidote)
خنثی‌کننده (Neutralizer)

How to Use It

frequency

High in news, medium-high in daily life.

Common Mistakes
  • In daru bi-asar. In daru bi-asar ast.

    You must include the verb 'to be' (ast) in Persian sentences.

  • Daru bi-asar Daru-ye bi-asar

    When used as an adjective modifying a noun, you need the Ezafe (-e).

  • Using bi-asar for 'void' tickets. Using 'batel'.

    'Batel' is for legal cancellation; 'bi-asar' is for lack of impact.

  • Spelling as 'بی‌اسر'. بی‌اثر

    The letter 'Se' (ث) is crucial for the meaning 'effect'.

  • Confusing bi-asar with bi-khabar. bi-asar

    Bi-khabar means 'unaware'. Don't mix them up in conversation.

Tips

Prefix Power

Remember that 'bi-' is a universal key. If you know 'asar', you now know 'bi-asar'. Apply this to 'pool' (money) and 'adab' (polite) too.

Medical Context

When talking to an Iranian doctor, use 'bi-asar' to describe medications that didn't work. It sounds very natural.

Legal Nuance

In official settings, 'bi-asar' means a document is no longer valid. Check your papers if you hear this!

Synonym Choice

Choose 'bi-asar' for lack of results, and 'bi-faydeh' for lack of quality or benefit.

Stress Check

Always stress the end of the word. Persian adjectives almost always have final stress.

Spelling Tip

The 's' in 'asar' is the letter 'Se' (ث). Don't use 'Sin' (س) or 'Sad' (ص).

Water in Mortar

Learn the idiom 'ab dar havan koobidan' to describe a 'bi-asar' action in a more colorful way.

News Keyword

Listen for 'bi-asar' in news about sanctions or international talks. It's a very common keyword.

Polite Negation

Use 'bi-asar nabud' (it wasn't ineffective) to politely acknowledge small help.

Scientific Use

In chemistry, 'bi-asar' describes inert gases. It's useful for STEM students.

Memorize It

Mnemonic

Imagine a BEE (bi) trying to push a giant ERASER (asar) but it has NO EFFECT on the paper. Bi-asar = No effect.

Visual Association

A blank white screen where a remote control is being pointed, but nothing happens. The remote is 'bi-asar'.

Word Web

Medicine Law Effort Useless Futile Sanctions Advice Neutral

Challenge

Try to find three things in your room right now that are 'bi-asar' (e.g., a dead battery, a pen without ink, a broken light).

Word Origin

A hybrid compound: 'bi' is a Middle Persian prefix (pē-), and 'asar' is an Arabic loanword (أثر) meaning 'trace' or 'impression'.

Original meaning: Literally 'without a trace' or 'without an impression'.

Indo-European (prefix) + Afro-Asiatic (root).

Cultural Context

Avoid calling a person 'bi-asar' to their face, as it implies they are a 'nobody' or useless.

Translates well to 'ineffective', but 'bi-asar' is used more often in daily Persian than 'ineffective' is in daily English.

Hafez often writes about the 'bi-asar' nature of the ascetic's prayers compared to the lover's sigh. Modern Iranian news frequently uses 'tahrim-haye bi-asar' (ineffective sanctions) as a political trope. The movie 'The Salesman' by Farhadi explores the bi-asar nature of traditional justice in modern Tehran.

Practice in Real Life

Real-World Contexts

Medical

  • داروی بی‌اثر
  • درمان بی‌اثر
  • بی‌اثر بودن واکسن
  • عوارض بی‌اثر

Legal

  • قرارداد بی‌اثر
  • قانون بی‌اثر
  • سند بی‌اثر
  • بی‌اثر کردن حکم

Personal

  • نصیحت بی‌اثر
  • تلاش بی‌اثر
  • گریه بی‌اثر
  • حرف بی‌اثر

Political

  • تحریم بی‌اثر
  • مذاکره بی‌اثر
  • بیانیه بی‌اثر
  • سیاست بی‌اثر

Scientific

  • ماده بی‌اثر
  • واکنش بی‌اثر
  • گاز بی‌اثر
  • محیط بی‌اثر

Conversation Starters

"آیا تا به حال دارویی مصرف کرده‌اید که بی‌اثر باشد؟ (Have you ever taken a medicine that was ineffective?)"

"فکر می‌کنید کدام قوانین در شهر ما بی‌اثر هستند؟ (Which laws do you think are ineffective in our city?)"

"چطور می‌توانیم تلاش‌هایمان را از بی‌اثر بودن نجات دهیم؟ (How can we save our efforts from being ineffective?)"

"آیا نصیحت‌های والدین همیشه بی‌اثر هستند؟ (Are parents' advices always ineffective?)"

"در چه موقعیتی سکوت بی‌اثر است؟ (In what situation is silence ineffective?)"

Journal Prompts

درباره زمانی بنویسید که تلاش زیادی کردید اما بی‌اثر بود. چه احساسی داشتید؟ (Write about a time you tried hard but it was ineffective. How did you feel?)

آیا فکر می‌کنید هنر می‌تواند در برابر جنگ بی‌اثر باشد یا خیر؟ (Do you think art can be ineffective against war or not?)

یک لیست از پنج وسیله بی‌اثر در خانه‌تان تهیه کنید و بگویید چرا بی‌اثر هستند. (Make a list of five ineffective items in your house and say why they are ineffective.)

تفاوت بین 'بی‌اثر بودن' و 'شکست خوردن' از نظر شما چیست؟ (What is the difference between 'being ineffective' and 'failing' in your opinion?)

اگر می‌توانستید یک قانون بی‌اثر را تغییر دهید، آن کدام بود؟ (If you could change one ineffective law, which one would it be?)

Frequently Asked Questions

10 questions

Yes, but it's very insulting. It means the person has no influence or value in a group. It's better to use it for their actions or words instead.

It is neutral to formal. You can use it in a scientific report or when talking to your mom about a headache pill.

The most common opposite is 'mo'asser' (effective). You can also use 'ba-asar' (having effect), but 'mo'asser' is more frequent.

No. For a blank paper, use 'sefid'. 'Bi-asar' means the *result* is missing, not the physical content.

You use the compound verb 'bi-asar kardan'. For example: 'bi-asar kardan-e sam' (neutralizing poison).

Yes! You can say 'tablighat-e ma bi-asar bud' (our ads were ineffective/had no reach).

They are almost identical. 'Bi-ta'sir' is slightly more common in modern spoken Persian, while 'bi-asar' is more standard in writing.

Yes. 'Gheryeh-haye u bi-asar bud' (Her cries had no effect/didn't move anyone).

The root 'asar' is very common, but the Persian compound 'bi-asar' is not in the Quran (which is Arabic).

Usually 'bi-asar' or 'biasar'.

Test Yourself 200 questions

writing

Write a sentence in Persian saying 'This medicine is ineffective.'

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

Correct! Not quite. Correct answer:
writing

Write a sentence in Persian saying 'My efforts were ineffective.'

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writing

Use 'bi-asar' in a sentence about a law.

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writing

Translate: 'The sanctions were completely ineffective.'

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writing

Write a sentence using 'bi-asar shodan'.

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writing

Translate: 'His advice remained ineffective.'

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writing

Use 'bi-asar' as an attribute for 'word' (harf).

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writing

Write a sentence about an ineffective plan.

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writing

Translate: 'This cream is ineffective for my skin.'

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writing

Write a sentence using 'bi-asar kardan'.

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writing

Translate: 'Logic is ineffective against prejudice.'

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writing

Write a complex sentence with 'bi-asar' and 'ama' (but).

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writing

Translate: 'The doctor said the treatment might be ineffective.'

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writing

Use 'bi-asar' in a scientific context.

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writing

Write a sentence about ineffective protests.

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writing

Translate: 'Your help was not ineffective.' (Polite)

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writing

Write a sentence about an ineffective key.

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writing

Translate: 'The coach's tactics were ineffective.'

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writing

Use 'bi-asar' to describe a person's influence.

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writing

Translate: 'Trying to change the past is ineffective.'

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speaking

Pronounce 'بی‌اثر' correctly.

Read this aloud:

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speaking

Say 'This medicine is ineffective' in Persian.

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speaking

Explain the meaning of 'bi-asar' in Persian to a friend.

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speaking

Say 'My efforts were useless' using 'bi-asar'.

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speaking

Ask 'Is this law ineffective?' in Persian.

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speaking

Say 'Completely ineffective' with emphasis.

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speaking

Pronounce 'daruye bi-asar' with the Ezafe.

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speaking

Use 'bi-asar' in a sentence about advice.

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speaking

Say 'The vaccine became ineffective.'

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speaking

Say 'It wasn't ineffective' (polite).

Read this aloud:

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speaking

Describe a broken key using 'bi-asar'.

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speaking

Say 'His plan remained ineffective.'

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speaking

Ask a doctor if a medicine is ineffective.

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speaking

Use 'bi-asar' to describe a TV ad.

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speaking

Say 'The sanctions were ineffective.'

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speaking

Say 'Logic is ineffective here.'

Read this aloud:

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speaking

Pronounce 'bi-asar kardan'.

Read this aloud:

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speaking

Say 'The cream didn't work.'

Read this aloud:

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speaking

Use 'bi-asar' in a sentence about a protest.

Read this aloud:

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speaking

Say 'Trying is ineffective.'

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listening

Listen to the word: /biː.æ.sær/. What does it mean?

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listening

Listen to: 'Daru bi-asar bud.' Was the medicine good?

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listening

Listen to: 'Tahrim-haye bi-asar.' What is the speaker talking about?

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listening

Listen to: 'Bi-asar kardan-e sam.' What is happening to the poison?

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listening

Listen to: 'Ghorse bi-asar.' Is it a pill or a liquid?

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listening

Listen to: 'Ghanun bi-asar shod.' When did the law change?

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listening

Listen to: 'Nasihat-e u bi-asar mand.' Did the person follow the advice?

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listening

Listen to: 'Kamalan bi-asar.' How much effect was there?

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listening

Listen to: 'Bi-asar nabud.' Is the speaker happy or sad about the help?

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listening

Listen to: 'Eghdam-e bi-asar.' What was done?

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listening

Listen to: 'Ab dar havan koobidan.' What does this idiom imply?

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listening

Listen to: 'Daruye bi-asar-nama.' What is the medical term?

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listening

Listen to: 'Bi-asar-sazi-ye doshman.' What is being done to the enemy?

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listening

Listen to: 'Geryeh-haye bi-asar.' Is the person still crying?

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listening

Listen to: 'Harf-e bi-asar.' What kind of talk is it?

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/ 200 correct

Perfect score!

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