くだらない質問

stupid question

→ くだらない
phrase Rare #28,336
stupid question A dismissive or insulting way to describe a question as pointless, trivial, or foolish. Often sounds rude, especially when directed at someone.
JA: そんなくだらない質問をするな。
EN: Don't ask such a stupid question.

くだらない質問すんなよ

Don’t ask such stupid questions.

こんなくだらない質問をする勇気はない

I don't have the nerve to ask such a silly question.

くだらない質問はやめて

Stop asking stupid questions.

— ダーク・プレイス (2015)

生徒たちはくだらない質問先生困らせた

The students annoyed the teacher with silly questions.

トムって、いっつもくだらない質問するのよ

Tom's always asking silly questions.

くだらない質問だな

What a stupid question.

くだらない質問やめろ

Stop asking stupid questions.

— オープン・ユア・アイズ (1997)