2623720 jmdict A [id=1078935] こつこつ働く;コツコツ働く こつこつはたらく[こつこつ働く];コツコツはたらく[コツコツ働く] [1][exp,v5k] to work hard; to toil; to moil; to keep one's nose to the grindstone; to slug away