コツコツ #9,639 Link copied! Common コツコツ [1] Meaning Shirabe ① To-adverb Adverb Onomatopoeic steadily; unflaggingly; untiringly; laboriously; diligently 彼かれはこつこつ事実じじつを調しらべていた。 He was patiently digging for facts. ② To-adverb Adverb Onomatopoeic knocking; tapping; clicking; drumming だれかがドアをこつこつとたたいている。 Someone is tapping at the door. Forms コツコツ#9,639コツコツこつこつ#20,450こつこつ Learn this word with smart reviews that adapt to you Save word