Answer: unbecoming

AnswerCrossword Clue
UNBECOMING"Conduct ..." (1995 Randy Shilts book on military policy)
UNBECOMINGNeither right nor proper
unbecoming(of a person's attitude or behavior) Not fitting or appropriate; unseemly
unbecomingnot becoming / the transition from existence to nonexistence
unbecoming(esp. of clothing or a color) Not flattering