This is the 9133rd most frequent Japanese word.
無粋
Lacking refinement; boorish; unromantic.
無粋 is used to describe actions lacking refinement or consideration.
その行動は無粋だと言わざるを得ない。
That behavior can only be described as tactless.
無粋 is used here to refer to inappropriate or tactless questions.
無粋な質問をしてしまったことを後悔しています。
I regret having asked such a tasteless question.
無粋 is used to characterize jokes or actions that disrupt harmony or are lacking tact.