Signification
Expressing doubt or uncertainty
Contexte culturel
In the North, communication tends to be slightly more formal and indirect. 'Tôi không chắc chắn' is used frequently to avoid giving a wrong answer, which is seen as a sign of carefulness and respect. Southerners are often more direct but still value politeness. You might hear 'không chắc' or the slang 'hên xui' much more often in Ho Chi Minh City than in Hanoi. In business, 'Tôi không chắc chắn' can sometimes be a 'soft no'. If a partner says this regarding a contract term, they likely want to renegotiate but don't want to shut down the conversation immediately. Scholars in Vietnam use 'không chắc chắn' to maintain scientific objectivity. It is considered more professional than claiming absolute knowledge.
Add 'lắm' for native flavor
Saying 'Tôi không chắc chắn lắm' (I'm not very sure) sounds much more natural and polite than the basic version.
Watch your tones
If you miss the rising tone on 'chắc chắn', it might sound like 'chặc chăn', which means nothing. Keep the pitch high!
Signification
Expressing doubt or uncertainty
Add 'lắm' for native flavor
Saying 'Tôi không chắc chắn lắm' (I'm not very sure) sounds much more natural and polite than the basic version.
Watch your tones
If you miss the rising tone on 'chắc chắn', it might sound like 'chặc chăn', which means nothing. Keep the pitch high!
The 'Soft No'
Remember that in Vietnam, this phrase is often a polite way to say 'No'. Don't always take it literally!
Teste-toi
Fill in the missing word to say 'I am not sure about this.'
Tôi không ___ chắn về việc này.
'Chắc chắn' is the full compound word for 'sure'.
Which response is most appropriate when a boss asks for a deadline you might miss?
Sếp: 'Em có xong việc hôm nay không?'
This is professional and polite, managing expectations while showing effort.
Complete the dialogue naturally.
A: 'Ngày mai trời có nắng không?' B: 'Dự báo thời tiết nói có, nhưng mình ___.'
The speaker is expressing doubt about the weather forecast.
Choose the most formal way to express uncertainty.
How do you say 'I'm not sure' to an elder?
'Dám chắc' (dare to be sure) with the polite particle 'ạ' is the most respectful form.
🎉 Score : /4
Aides visuelles
Banque d exercices
4 exercicesTôi không ___ chắn về việc này.
'Chắc chắn' is the full compound word for 'sure'.
Sếp: 'Em có xong việc hôm nay không?'
This is professional and polite, managing expectations while showing effort.
A: 'Ngày mai trời có nắng không?' B: 'Dự báo thời tiết nói có, nhưng mình ___.'
The speaker is expressing doubt about the weather forecast.
How do you say 'I'm not sure' to an elder?
'Dám chắc' (dare to be sure) with the polite particle 'ạ' is the most respectful form.
🎉 Score : /4
Questions fréquentes
10 questions'Chắc' can mean 'sure' or 'probably'. 'Chắc chắn' is more emphatic and specifically means 'certain' or 'solid'.
It's neutral. With very close friends, you might just say 'Không chắc' or 'Chưa biết nữa'.
You say 'Bạn có chắc chắn không?'
Yes! 'Cái ghế này không chắc chắn' means 'This chair is not sturdy'.
It's a slang version of 'I'm not sure/It depends on luck'. Use it only with friends!
To save face and maintain social harmony. A direct 'No' can be seen as rude.
Yes, 'Không chắc' is a common short version in texting.
No, in Vietnamese, the negation 'không' always comes before the adjective.
Yes, but follow it up with 'để tôi tìm hiểu thêm' (so I can find out more) to show proactiveness.
The opposite is 'Tôi chắc chắn' (I am sure) or 'Chắc chắn rồi' (Certainly).
Expressions liées
Tôi không biết
similarI don't know
Chưa chắc
synonymNot yet sure / Not necessarily
Có lẽ
similarMaybe
Chắc chắn rồi
contrastCertainly / Of course
Hên xui
specialized formIt's a toss-up
Hình như
builds onIt seems like
