Chinese words with 废 character meaning (HSK)

废话

FEI4, HUA4
nonsense, rubbish, superfluous words, You don't say!, No kidding! (gently sarcastic)

半途而废

BAN4, TU2, ER2, FEI4
to give up halfway (idiom), leave sth unfinished

废除

FEI4, CHU2
to abolish, to abrogate, to repeal

废寝忘食

FEI4, QIN3, WANG4, SHI2
to neglect sleep and forget about food (idiom), to skip one's sleep and meals, to be completely wrapped up in one's work

废墟

FEI4, XU1
ruins

作废

ZUO4, FEI4
to become invalid, to cancel, to delete, to nullify