Korean: 7 NHSK word(s): 苦* 4 ku3bitter/ hardship/ pain/ to suffer/ painstaking 辛苦* 4 xin1 ku3hard/ exhausting/ with much toil/ thanks for your trouble 艰苦* 5 jian1 ku3difficult/ hard/ arduous 痛苦* 5 tong4 ku3pain/ suffering/ painful/ CL:個|个[ge4] 刻苦* 5 ke4 ku3hardworking/ assiduous 苦尽甘来* 6 ku3 jin4 gan1 lai2bitterness finishes; sweetness begins (idiom)/ the hard times are over; the good times just beginning 吃苦* 6 chi1 ku3to bear/ hardships KOREAN6000 word(s): KOREAN 2500 New HSK words): KOREAN Sentence(s):