duìbuqǐ
I'm sorry
不客气
You're welcome
不 (bù) means 'not', and 客气 (kèqi) means 'polite' or 'courteous'. Literally 'don't be polite', it implies 'no need for thanks'.
不谢
bú xiè
Not at all — Shorter and more casual.
别客气
bié kèqi
Don't mention it — Softer and friendlier, like "no need to stand on ceremony".
不用谢
bú yòng xiè
No need to thank me — Colloquial and shorter variant.
谢谢你!
xièxiè nǐ!
Thank you!
不客气!
bú kèqi!
You're welcome!
Appropriate
Avoid when
The most common way is 不客气 (bú kèqi). It literally means 'don't be polite' and is used in all situations.
It is pronounced bú kèqi. Note that 不 changes from bù to bú before a fourth tone, so it sounds like 'boo kuh-chee'.
Use it as a reply to 谢谢 (xièxie, thank you). It's appropriate in both casual and formal settings.
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