duì
Correct
不对
Not correct
不 (bù) means 'not', and 对 (duì) means 'correct' or 'right'. Together they form 'not correct'.
不是
bù shì
It's not (that). — More colloquial and often used to deny a statement rather than to judge correctness.
不对劲
bú duì jìn
Something's off. — Used when a situation feels strange or suspicious, not just factually wrong.
你觉得这个答案对吗?
Nǐ juéde zhège dá'àn duì ma?
Do you think this answer is correct?
不对。
Bù duì.
Not correct.
Appropriate
Avoid when
You say 不对 (bú duì). It literally means 'not correct' and is used to indicate that something is wrong.
It is pronounced bú duì. Note that 不 changes from bù to bú before a fourth tone like 对.
Use 不对 when specifically saying something is incorrect or wrong. Use 不是 when negating a noun or identity, like 'It is not me' (不是我).
Tomyo
Remember 不对 and hundreds of other phrases with smart reviews, audio and examples.