一いっ計けいいっけいMeanings1nounplan; scheme; ideaOften used in the phrase 一計を案じる (to devise a plan). Slightly literary or formal; in casual speech 計画 or アイデア are more common.彼かれは一いっ計けいを案あんじて、問もん題だいを解かい決けつした。He devised a plan and solved the problem.Expressions一いっ計けいを案あんじるdevise a plan; work out a plan