不得体

I was surprised by the impropriety of his remarks.

他的话不得体,我听了很诧异。

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

他不得体的话语使他到十分不快。

Your levity is unseemly at this time.

在这种场合,你的轻举动是不得体的。

She bridled at the indelicate suggestion.

她对不得体的怒了。