はたら こつこつ働く Show inflections LinksSentence search for こつこつ働くSentence search for こつこつはたらくSentence search for コツコツ働くSentence search for コツコツはたらくKanji details for 働Edit in JMdict Expressions (phrases, clauses, etc.), Godan verb with 'ku' ending1. to work hard; to toil; to moil; to keep one's nose to the grindstone; to slug awayOther formsコツコツ働く 【コツコツはたらく】 Discussions Log in to talk about this word.