一対 いっつい Meanings Noun, の-adjective pair; couple Kanji 一 one. Read as イチ. 対 against. Read as ツイ. Words containing 一対 好一対 (こういっつい) well-matched 左右一対 (さゆういっつい) left-and-right pair 三幅一対 (さんぷくいっつい) set of three Jinuma: Japanese Dictionary · Word lists