Chinese words with 苦 character meaning (HSK)

KU3
bitter, hardship, pain, to suffer, painstaking

XIN1, KU3
hard, exhausting, with much toil, thanks for your trouble

JIAN1, KU3
difficult, hard, arduous

KE4, KU3
hardworking, assiduous

TONG4, KU3
pain, suffering, painful

CHI1, KU3
to bear, hardships

KU3, JIN4, GAN1, LAI2
bitterness finishes, sweetness begins (idiom), the hard times are over, the good times just beginning

KU3, SE4
bitter and astringent, pained, agonized