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.
This patch looks a bit unprofessional.这块补丁有点像出自外行之手。
违反职业道德标准的
The teacher was dismissed from his post for unprofessional conduct.这名教师因其行为违反职业道德而被解职。
英英词典释义
Adjective
1. not characteristic of or befitting a profession or one engaged in a profession;
"described in unprofessional language so that high school students could understand it""was censured for unprofessional conduct""unprofessional repairs"