fèi​qì

discard

废弃 (廢棄) fèi​qì
discard verb
to throw away or cease to use something physical

We must properly dispose of discarded electronic products.

invalidate verb
to abandon old customs or nullify a rule, law, or treaty

This obsolete system should be abolished.

Frequency

Movie subtitles
6.50 per million appears in 3% of films
Written text
5.31 per million

Sources

Definitions
CC-CEDICT