unprofessional

柯林斯詞典

1. ADJ If you use unprofessional to describe someone's behaviour at work, you are criticizing them for not behaving according to the standards that are expected of a person in their profession. 不專業(yè)的; (工作中的行為) 未達到專業(yè)標準的[表不滿]
He was fired for unprofessional conduct. 他因不專業(yè)的操作而被解雇。

She was doing her best to help , but her manner was a bit unprofessional.
I know she felt annoyed , but that angry outburst was totally unprofessional.
It's a bit unprofessional to talk about other members of staff like that.
I hope she didn't think I was being unprofessional.
It's very unprofessional to let your private life spill over into your working life .