zuò​fèi HSK6

become invalid

作废 (作廢) zuò​fèi
become invalid verb
to become null and void or lose effectiveness, often due to expiration

This ticket has expired and is now invalid.

nullify verb
to cancel, delete, or declare a document, agreement, or record as void

Both parties agreed to void the old contract.

Frequency

Movie subtitles
1.43 per million appears in 1% of films
Written text
5.75 per million

Details

HSK 2.0
Level 6
HSK 3.0
Level 6

Sources

Definitions
CC-CEDICT