adulteress
/ˌædʌlˈtɛrɪs/; /-ˈtɜːr-/Definitions
1. noun
A woman who commits adultery.
“She was shunned by the community after being accused of being an adulteress.”
2. noun
A woman who engages in illicit sexual relations with another man, typically while married to someone else.
“The novel explores the life of an adulteress and her tragic consequences.”