効率性 こうりつせい Meanings Noun efficiency See also: 効率 (こうりつ). Kanji 効 effect. Read as コウ. 率 rate. Read as リツ. 性 nature. Read as セイ. Example sentences 仕事場の管理者は、正確さ、効率性、献身を期待する。Office managers expect accuracy, efficiency, and dedication. Jinuma: Japanese Dictionary · Word lists