bèi​qì

renounce

背弃 (背棄) bèi​qì
renounce verb
to break or go against a promise, belief, or principle

No matter what difficulties he encounters, he will not abandon his faith.

abandon verb
to desert or turn one's back on a person, group, or duty

He abandoned his partners when the company was at its most difficult time.

Frequency

Movie subtitles
2.30 per million appears in 1% of films
Written text
1.01 per million

Sources

Definitions
CC-CEDICT