不一定

bù yī dìng

not necessarily; uncertain

HSK Level 2

Example Sentences

我不一定去。

wǒ bù yīdìng qù.

I may not go.

他不一定来。

tā bù yīdìng lái.

He may not come.

不一定下雨。

bù yīdìng xià yǔ.

It may not rain.

Synonyms

Antonyms

一定 (yīdìng)

certain

必定 (bìdìng)

surely

Start Learning with HSK Tracker

Track your progress, master characters, and achieve your Chinese language goals.

Get Started Free
HSK Tracker Preview

Etymology & Components

The Chinese word 不一定 (bù yīdìng) is a commonly used phrase that means "not necessarily" or "not sure". It is composed of three characters: 不 (bù), 一 (yī), and 定 (dìng).The character 不 (bù) is a negation particle that means "not" or "no". It is often used to negate verbs, adjectives, or adverbs. In the case of 不一定, it negates the verb 一定 (yīdìng), which means "certainly" or "definitely".The character 一 (yī) is a number that means "one". It is also used as a quantifier to mean "a" or "an". In the case of 不一定, it is used to emphasize the uncertainty of the statement.The character 定 (dìng) means "to decide" or "to determine". It is often used to indicate certainty or definiteness. In the case of 不一定, it is used to negate the certainty of the statement.When combined together, the three characters 不一定 (bù yīdìng) form a phrase that means "not necessarily" or "not sure". It is a useful phrase to express uncertainty or doubt in Chinese.