noun
Bound form used only in the set phrase 間髪を入れず (かんはつをいれず), meaning 'without a moment's delay' or 'in the nick of time'. Not used independently in modern Japanese.
See also: 間髪を入れず
「間髪を入れず」という表現で、髪は「はつ」と読む。
In the expression 間髪を入れず, 髪 is read as はつ.
彼は間髪を入れずに反論した。
He retorted without a moment's delay.