“不得体”的英语可以翻译为：e unbecoming to，impropriety，unseemliness ...

原教旨主义团体严厉抨击那些他们认为穿着不得体的女性。Fundamentalist groups have attacked women they regarded as improperly dressed.他有些话说得很不得体。Some of his remarks were very off-key.没人认为她只身出现在那里不得体。Nobody questioned the propriety of her being there ...