苦

酸甜苦辣

suān tián kǔ là

lit. sour, sweet, bitter and spicy (idiom)

离苦得乐

lí kǔ dé lè

to abandon suffering and obtain happiness (Buddhism)

不胜其苦

bù shèng qí kǔ

unable to bear the pain (idiom)

不辞劳苦

bù cí láo kǔ

to spare no effort

不辞辛苦

bù cí xīn kǔ

to make nothing of hardships

二遍苦

èr biàn kǔ

second persecution

何苦

hé kǔ

why bother?

倒悬之苦

dào xuán zhī kǔ

lit. the pain of being hanged upside down (idiom); fig. extremely critical situation

倒苦水

dào kǔ shuǐ

to pour out one's grievances

备尝艰苦

bèi cháng jiān kǔ

see 備嘗辛苦|备尝辛苦[bei4 chang2 xin1 ku3]

备尝辛苦

bèi cháng xīn kǔ

(idiom) to have suffered all kinds of hardships

八苦

bā kǔ

the eight distresses - birth, age, sickness, death, parting with what we love, meeting with what we hate, unattained aims, and all the ills of the five skandhas (Buddhism)