没空 (méi kòng) means “busy” | MotiTan Chinese Dictionary

More examples

他现在没空帮你。tā xiàn zài méi kòng bāng nǐ

He does not have time to help you right now.

No open stretch of time remains for another task.

忙máng: Occupied with many tasks, leaving little time or room for other things.

没有空闲时间，不能抽出时间去做某事。méi yǒu kòng xián shí jiān bù néng chōu chū shí jiān qù zuò mǒu shì

没 (méi, "not have") + 空 (kòng, "spare time") forms a compact spoken expression for the absence of available time.

In everyday conversation, the word can stand alone as a reply to a request; adding a reason or another possible time gives the exchange a more cooperative tone in formal settings.