expression, i-adjective
cannot be ignored; cannot be taken lightly; requires serious attention
Used when something is too important or serious to be dismissed or handled carelessly. Often appears in formal or cautionary contexts.
この問題はゆるがせにできない。
This problem cannot be ignored.
安全対策はゆるがせにできない課題だ。
Safety measures are an issue that cannot be taken lightly.
Rare kanji spelling; 忽 is not a jōyō kanji and this form is seldom used.
Irregular kanji usage; included for search coverage but not recommended for learners.
Derived from the classical expression 忽せ (yurugase), meaning 'negligent' or 'careless', combined with the negative potential form of する, literally 'cannot be made light of'. The kanji 忽 is rare and not commonly used in modern Japanese.