Adulterer and Two-timer

Adulterer noun - Someone who commits adultery or fornication.

Two-timer and adulterer are semantically related. In some cases you can use "Two-timer" instead a noun "Adulterer".

Two-timer noun - Someone who deceives a lover or spouse by carrying on a sexual relationship with somebody else.

Adulterer and two-timer are semantically related. Sometimes you can use "Adulterer" instead a noun phrase "Two-timer".