試行錯誤しこうさくご Common Noun Irregular Transitive English jmdict 1 noun (common) (futsuumeishi) noun or participle which takes the aux. verb suru transitive verb yojijukugo trial and error 解決策が功を奏したのは試行錯誤の結果だった。 Finding a solution that worked was a process of trial and error.