unprofessional

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. 不专业的; (工作中的行为) 未达到专业标准的[表不满]

He was fired for unprofessional conduct. 他因不专业的操作而被解雇。