expression, i-adjective
not taking the slightest notice; paying absolutely no attention
Strong negative expression meaning to completely ignore or disregard something. Often used with も for emphasis.
彼は私の忠告を一顧だにしなかった。
He paid absolutely no attention to my advice.
その提案は一顧だにされなかった。
The proposal was not given the slightest consideration.
一顧 (a single glance) + だに (even) + しない (not do). The classical particle だに adds emphasis, meaning 'not even a single glance'.