zuò​fèi HSK6

to become invalid

Senses

作废/ 作廢 zuò​fèi to become invalid

to lose effectiveness or validity; to expire (of a ticket, contract, etc.)

作废/ 作廢 zuò​fèi to nullify

to cancel, discard, or declare something void; to treat as useless

References

antonym 作数/作數 作废/作廢