不得体

I was surprised by the impropriety of his remarks.

他的话不得体,我听了很诧异。

Your levity is unseemly at this time.

在这种场合,你的轻率举动是不得体的。

His tactless words had incurred his father’s deep displeasure.

他不得体的话语使他亲感到十分不快。

She bridled at the indelicate suggestion.

她对不得体的暗示发怒了。