Adulterer (noun)

A person who engages in sexual intercourse with someone who is not their spouse.

Origin:

Late middle english: from old french adultere, from latin adulterare 'corrupt', from adulter 'adulterer'.

Examples:

1. The adulterer was caught in the act and was punished severely.
2. The adulterer's actions caused great harm to their spouse and family.
3. The adulterer showed no remorse for their actions.
4. The adulterer's infidelity was a shock to their friends and family.
5. The adulterer's behavior was unacceptable and they were ostracized.