unbecoming /ˌʌnbɪˈkʌmɪŋ/ adjective Learner's definition of UNBECOMING
[more unbecoming; most unbecoming]
1
: not attractive : not becoming不好看的;不相配的 2
formal : not appropriate or acceptable for a person in a particular job or position不得体的;不适宜的 —
often + of or to