一任 いちにん Meanings Noun, する verb, Transitive entrusting (everything to); leaving (a matter) entirely with Kanji 一 one. Read as イチ. 任 entrust. Read as ニン. Example sentences 家計のことは妻に一任していた。I entrusted my wife with the family finances. Words containing 一任 売買一任勘定 (ばいばいいちにんかんじょう) discretionary account (in securities) Jinuma: Japanese Dictionary · Word lists