Miscreant and Two-timer

Miscreant noun - A mean, evil, or unprincipled person.

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

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

Miscreant and two-timer are semantically related in person who is disloyal topic. Sometimes you can use "Miscreant" instead a noun phrase "Two-timer".