qíng​fù

mistress

情妇 (情婦) qíng​fù
mistress noun
a woman who is involved in an ongoing sexual relationship with a man, typically one who is married to someone else

The official had to resign because of the scandal involving a mistress.

Frequency

Movie subtitles
5.37 per million appears in 2% of films
Written text
2.40 per million

Sources

Definitions
CC-CEDICT