苦干 (苦幹) kǔgàn

kǔgàn verb to work hard
Domain: Modern Chinese 现代汉语
Notes: (CC-CEDICT '苦幹')

Contained in

• 埋头苦干(埋頭苦幹) to bury oneself in work; to be engrossed in work; to make an all-out effort; up to the neck in work