〜を問わず

About

～を問とわず is used to express "regardless of X".

～を問とわず attaches to nouns that express a range of options (e.g., age, gender, experience, etc.), or two opposites (e.g., day and night, pass or fail, etc.).

E.g. このラーメン屋やは、昼夜ちゅうやを問とわず混こんでいる。 "This ramen shop is crowded day and night."

E.g. 経験けいけんやスキルの有無うむを問とわず、誰だれでも応募おうぼできます。 "Anyone can apply, regardless of their experience or skills."

E.g. 野球やきゅうは、年齢ねんれいや性別せいべつを問とわず人気にんきのスポーツです。 "Baseball is a popular sport (among many), regardless of gender or age."

～を問とわず sounds stiff and formal in tone.

Summary

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  ～を問とわず is a stiff and formal way to express "regardless of X"

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  ～を問とわず attaches to nouns that express a range of options or two opposites