未必

wèibì

adverb HSK 6 #9,966

Meanings

'Not certainly' - not necessarily.

HSK 1

贵的东西未必好。

Guì de dōngxi wèibì hǎo.

Expensive things aren't necessarily good.

HSK 1

他未必会来。

Tā wèibì huì lái.

He may not come.

HSK 4

这个方法未必有效。

Zhège fāngfǎ wèibì yǒuxiào.

This method may not be effective.

grammar

未必 expresses polite disagreement or doubt. It is softer than saying 不 directly. Compare: 他不会来 (he won't come) vs 他未必会来 (he might not come).

未 wèi

必 bì