Negative Answers: Không, Chưa, and Đâu Có | Vietnamese Grammar

A negative answer in Vietnamese does more than reverse yes into no. Không rejects a proposition, chưa says that an expected event has not happened up to the relevant time, and đâu có pushes back against an assumption or accusation. The selected form therefore reveals how the speaker understands both the event and the conversational pressure behind the question.

This page focuses on responses. The full syntax of ordinary không + predicate belongs to Không before Predicates, while negative commands belong to Đừng and Negative Commands.

A decision guide for negative responses

Response	Core commitment	Typical conversational effect
Không.	The proposition is false, rejected, or refused.	Neutral when expanded; potentially abrupt by itself
Chưa.	The expected event is not complete up to now.	Leaves a later positive outcome open
Đâu có.	The assumption behind the question is wrong.	Corrective, defensive, surprised, or reassuring (informal)
Không phải (là)...	A proposed identity, classification, or account is wrong.	Sets up an explicit correction
Chẳng/chả...	Strong or expressive negation.	Chẳng literary or emphatic; chả colloquial, especially Northern

Ask three questions before answering: Is this simply false? Is it merely not true yet? Or am I correcting something the other speaker seems to believe? That decision chooses không, chưa, or đâu có more reliably than translating English no/not word by word.

Không: categorical denial or refusal

Standalone Không rejects the proposition supplied by the previous turn. A fuller echo answer is often more natural and less blunt because it states exactly what is being denied.

— Anh biết mật khẩu không? — Không, tôi không biết.

— Do you know the password? — No, I don't.

— Chị có nhận lời mời không? — Không, tôi xin phép từ chối.

— Will you accept the invitation? — No, I must respectfully decline.

The string không biết is ordinary clausal negation: the state of knowing is denied. As an answer, the initial Không can stand alone because the entire questioned proposition is recoverable. In a service encounter or conversation with a senior, adding ạ and echoing the predicate can make the response appropriately deferential:

— Cháu có cần lấy hóa đơn không? — Dạ không ạ, cháu không cần.

— Do you need a receipt? — No, thank you; I don't need one. (deferential)

Here dạ acknowledges the older or higher-status speaker, while không ạ supplies the negative answer. Dạ itself does not mean yes; that common English-speaker assumption can reverse the intended answer.

Chưa: a negative answer with an open future

Use chưa when the question concerns whether an event has occurred or a state has been reached by the reference time. It means “not yet,” not categorical “no.”

— Em ăn chưa? — Chưa, em đang đợi chị về ăn cùng.

— Have you eaten yet? — Not yet; I'm waiting for you to come home so we can eat together.

— Báo cáo xong chưa? — Chưa xong; tôi còn phải kiểm tra số liệu.

— Is the report finished yet? — Not finished yet; I still have to check the figures.

The minimal phrase chưa ăn locates eating on an expected timeline: no eating has occurred up to now, but later eating remains live. By contrast, không ăn can mean that someone does not eat, will not eat, or refuses to eat, depending on context.

— Tối nay con ăn ở nhà không? — Không, con ăn với các bạn.

— Are you eating at home tonight? — No, I'm eating with friends.

— Con ăn tối chưa? — Chưa ạ, con mới đi làm về.

— Have you had dinner yet? — Not yet; I just got home from work. (deferential)

English no can answer both questions. Vietnamese forces the speaker to distinguish rejection of a plan from noncompletion on an expected timeline.

Đâu có: rejecting an assumption

Đâu có + predicate is a corrective negative frame. It often responds to blame, surprise, a mistaken recollection, or an inference that the speaker wants to undo. In conversational speech, đâu có may be followed by an echo of the disputed predicate; đâu có! alone is possible when that predicate is completely obvious.

— Cậu quên cuộc hẹn rồi à? — Đâu có quên, tớ đang trên đường đến đây.

— You forgot the appointment, did you? — I didn't forget; I'm on my way there.

— Chắc chị giận em. — Chị đâu có giận; chị chỉ hơi mệt thôi.

— You must be angry with me. — I'm not angry; I'm just a little tired.

The minimal contrast đâu có quên does not merely report “did not forget.” It corrects the other speaker's apparent assumption that forgetting occurred. A neutral report would be Tôi không quên. Depending on voice, đâu có can sound defensive, incredulous, affectionate, or reassuring; the construction itself is not inherently rude.

In more formal prose, direct correction normally uses không, không phải, or an explicit contrast rather than conversational đâu có.

Không phải là dữ liệu bị mất; vấn đề nằm ở quyền truy cập.

It is not that the data was lost; the problem lies in the access permissions. (formal)

The wider negation system behind an answer

Vietnamese negation selects for aspect and speech act. The following forms can all correspond to English not/no, but they make different commitments.

Form	Function	Natural interpretation
không biết	neutral predicate denial	do not know
chưa ăn	not-yet aspect	have not eaten yet
chẳng ai	negative quantification	nobody
đừng đi	prohibitive speech act	do not go
không phải là	corrective/classificatory negation	is not / it is not that
đâu có quên	rebuttal of an assumption	I/he/she didn't forget!

Chẳng ai combines negation with the human interrogative ai to mean “nobody.” Chẳng is emphatic and is also at home in literary prose. Chả is its strongly conversational counterpart (informal; especially Northern):

Tôi gọi mấy lần mà chẳng ai nghe máy.

I called several times, but nobody answered.

Tớ chả biết anh ấy đang nói gì.

I have no idea what he's talking about. (informal; especially Northern)

The polarity item hề strengthens a negative but cannot normally create negation by itself. Use không hề, chưa hề, or sometimes chẳng hề.

Tôi chưa hề nhận được thông báo đó.

I have never received that notice up to now.

The choice of chưa hề preserves relevance to the present. Không hề is a categorical “not at all,” as in Tôi không hề biết việc đó “I knew absolutely nothing about that.”

Scope and constituent correction

A bare negative answer can leave scope unclear. Repeat or contrast the relevant constituent when more than one part of the question could be denied.

— Mai anh gặp Lan ở Huế à? — Không, tôi gặp Lan ở Đà Nẵng, không phải ở Huế.

— Are you meeting Lan in Huế tomorrow? — No, I'm meeting Lan in Đà Nẵng, not in Huế.

This answer does not deny meeting Lan or deny tomorrow; it corrects only the location. Vietnamese often uses không phải X mà là Y for an explicit constituent repair:

Không phải Minh gọi, mà là chị của Minh.

It wasn't Minh who called; it was Minh's older sister.

Because không phải là can reject an entire proposed analysis, it is more precise than a floating không in argumentation.

Negative questions: echo the proposition, not English yes/no

Answers to negative questions are risky for English-speaking learners because English yes and no can be interpreted relative either to the negative wording or to the underlying event. Vietnamese có and không normally express absolute polarity: có asserts the positive proposition, while không asserts the negative proposition, even after a negative ...à? question. Echoing the relevant predicate makes that Vietnamese logic unmistakable.

— Anh không đi họp à? — Tôi vẫn đi; tôi chỉ đến muộn thôi.

— Aren't you going to the meeting? — I am going; I'll just arrive late.

— Em chưa gửi thư à? — Chưa gửi; em đang kiểm tra lại địa chỉ.

— Haven't you sent the letter yet? — Not yet; I'm checking the address again.

The answers vẫn đi and chưa gửi identify the state of affairs directly. A native listener normally understands bare có as positive and không as negative, but an English-speaking learner may wrongly treat either one as agreement with the wording of the question. Predicate echo prevents that cross-linguistic error.

A dialogue in which response choice changes the story

— Em chưa nộp hồ sơ à? — Chưa, em còn đợi giấy xác nhận.

— Haven't you submitted the application yet? — Not yet; I'm still waiting for the confirmation letter.

— Thế là em không định nộp nữa sao? — Đâu có; nhận được giấy là em nộp ngay.

— So you don't intend to submit it anymore? — Not at all; as soon as I get the letter, I'll submit it.

— Em có cần anh gọi giúp không? — Không, em tự xử lý được ạ.

— Do you need me to call for you? — No, I can handle it myself. (deferential)

Chưa postpones completion, đâu có rejects the false inference that the plan has been abandoned, and không declines an offer. One English answer no cannot preserve all three distinctions.

Common Mistakes

1. Using không where the event is merely pending.

❌ — Em ăn sáng chưa? — Không.

Misleading — this can sound like a categorical refusal or nonhabit rather than ‘not yet.’

✅ — Em ăn sáng chưa? — Chưa, lát nữa em ăn.

— Have you had breakfast yet? — Not yet; I'll eat in a little while.

2. Using chưa for a stable categorical fact.

❌ Tôi chưa biết tiếng Nhật.

Wrong if you mean categorically that you do not know Japanese; it strongly suggests ‘not yet.’

✅ Tôi không biết tiếng Nhật.

I don't know Japanese.

3. Putting the negator after the verb on an English model.

❌ Tôi biết không mật khẩu.

Incorrect — ordinary predicate negation precedes biết.

✅ Tôi không biết mật khẩu.

I don't know the password.

4. Answering a negative question with an unanchored yes/no.

⚠ — Chị không tham gia à? — Có.

Grammatical Vietnamese: có affirms that she is participating, but an English-speaking learner may misread the bare reply as agreement with the negative wording.

✅ — Chị không tham gia à? — Tôi có tham gia, nhưng sẽ đến muộn.

— Aren't you participating? — I am, but I'll arrive late.

5. Using đâu có as a neutral formal denial.

❌ Báo cáo kết luận rằng đâu có mối liên hệ nhân quả.

✅ Báo cáo kết luận rằng không có mối liên hệ nhân quả.

The report concludes that there is no causal relationship. (academic)

💡

A good negative response names its relation to time and discourse: không denies, chưa postpones completion, and đâu có contradicts an assumption.

Key Takeaways

Use không for categorical denial or refusal, but expand it when politeness or scope needs clarity.
Use chưa when an expected event has not happened yet and a later positive outcome remains possible.
Use đâu có to rebut a presupposition, accusation, or mistaken inference in conversation.
Chẳng/chả, hề, đừng, and không phải là occupy different parts of the negation system; they are not free synonyms for English not.
After a negative question, echo the predicate—vẫn đi, chưa gửi, không cần—so English yes/no habits cannot obscure Vietnamese absolute polarity.

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