making light of; disregarding; treating as trivial
Used in negative contexts to express that something should not be taken lightly or neglected. Often appears in set phrases like あだやおろそかにできない or あだやおろそかには扱えない.
This problem cannot be taken lightly.
You must not disregard his warning.
Rare kanji spelling; 徒 represents 'futility' and 疎か 'neglect', but the combination is not standard.
Irregular kanji usage; 仇 can mean 'enemy' or 'harm', making this spelling potentially misleading.
Mixed kanji-kana spelling; irregular and rarely used.
Mixed kanji-kana spelling; irregular and rarely used.
The expression combines あだ (futility, transience) and おろそか (neglect, carelessness). The exact historical derivation is uncertain, but it likely developed as an emphatic phrase meaning 'to treat as both futile and negligible'.