un ‧ be ‧ com ‧ ing /ˌʌnbɪˈkʌmɪŋ◂/ BrE AmE adjective old-fashioned
1 . clothes that are unbecoming make you look unattractive SYN unflattering
2 . behaviour that is unbecoming is shocking or unsuitable
unbecoming to
conduct unbecoming to a teacher
un ‧ be ‧ com ‧ ing /ˌʌnbɪˈkʌmɪŋ◂/ BrE AmE adjective old-fashioned
1 . clothes that are unbecoming make you look unattractive SYN unflattering
2 . behaviour that is unbecoming is shocking or unsuitable
unbecoming to
conduct unbecoming to a teacher
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012