一気呵成 いっきかせい Meanings Noun finishing in one go; completing in one sitting; (doing something) in a single breath (oft. adverbially as ～に) Kanji 一 one. Read as イチ. 気 spirit. Read as いき. 呵 scold; blow on; reprove 成 become. Read as セイ. Word lists Yojijukugo (四字熟語) Jinuma: Japanese Dictionary · Word lists