# Chưa hẳn / không hẳn: not necessarily in Vietnamese

> Chưa hẳn and không hẳn mean "not necessarily, not quite". They push back gently on a conclusion without claiming the opposite.

Source: https://vietnamesebuddy.com/grammar/chua-han/ · Updated 2026-10-17

**not necessarily**

Pattern: `[statement] + chưa hẳn / không hẳn (là) + [conclusion]`

Level: B2 (our estimate) · Register: everyday

Typed without accents: chua han, khong han

*Chưa hẳn* and *không hẳn* mean "not necessarily, not quite". They push back gently on a conclusion without claiming the opposite. They go right before the part you doubt, often with *là*: *Mắc chưa hẳn là ngon*, expensive doesn't necessarily mean good.

On its own, *Không hẳn* is a handy reply, "Not exactly", followed by what's really true: *Không hẳn, anh chỉ hơi mệt thôi.*

The two are close. *Không hẳn* says it simply isn't fully so. *Chưa hẳn* has *chưa* (not yet) inside, so it leaves room: maybe, but you can't take it for granted. It often pairs with *đã*: *Học giỏi chưa hẳn đã làm giỏi*, being good at school doesn't automatically make you good at the job.

*Hẳn* alone means "surely": *hẳn là* is "it must be". The negative turns that certainty into doubt.

The everyday neighbour is *chưa chắc*, "it's not certain", very common in Saigon: *Chưa chắc ảnh tới đâu*, he might not come. *Chưa chắc* is about whether something will happen; *chưa hẳn* is about whether a judgment holds. You'll also see *chưa hẳn* in opinion pieces, so it's at home in careful writing as well as in speech.

## Examples

- Saigon: Mắc chưa hẳn là ngon đâu em. | Hà Nội: Đắt chưa hẳn là ngon đâu em. — Expensive doesn't necessarily mean good, you know.
- Anh giận em hả? — Are you upset with me?
- Không hẳn, anh chỉ hơi mệt thôi. — Not exactly, I'm just a bit tired.
- Học giỏi chưa hẳn đã làm giỏi. — Being good at school doesn't automatically make you good at work.
- Saigon: Ở trung tâm chưa hẳn là tiện, kẹt xe lắm. | Hà Nội: Ở trung tâm chưa hẳn là tiện, tắc đường lắm. — Living in the centre isn't necessarily convenient, the traffic's terrible.

## Compare

- [Completely, for good: verb + hẳn](https://vietnamesebuddy.com/grammar/han-completely/): completely

Previous in Saying no and not: [It's not that … not: không phải là … không](https://vietnamesebuddy.com/grammar/khong-phai-khong/)

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