un·be·com·ing 
/ˌʌnbɪˈkʌmɪŋ/ adjective
/ˌʌnbɪˈkʌmɪŋ/ adjective [more unbecoming; most unbecoming] 1 : not attractive : not becoming
▪ an unbecoming dress ▪ That color is very unbecoming on her. 2 formal : not appropriate or acceptable for a person in a particular job or position
▪ conduct unbecoming an officer [=conduct/behavior that is not appropriate for an officer] — often + of or to ▪ behavior unbecoming of/to a public official
▪ an unbecoming dress ▪ That color is very unbecoming on her.
▪ conduct unbecoming an officer [=conduct/behavior that is not appropriate for an officer] — often + of or to ▪ behavior unbecoming of/to a public official
