ADULTERER
adulterer, fornicator
(noun) someone who commits adultery or fornication
Source: WordNet® 3.1
Etymology
Noun
adulterer
One who commits adultery: a spouse who has sex with a non-spouse
Synonym: Thesaurus:libertine
A male adulterer specifically, opposite adulteress referring to female ones.
Source: Wiktionary
A*dul"ter*er, n. Etym: [Formed fr. the verb adulter, with the E.
ending -er. See Advoutrer.]
1. A man who commits adultery; a married man who has sexual
intercourse with a woman not his wife.
2. (Script.)
Definition: A man who violates his religious covenant. Jer. ix. 2.
Source: Webster’s Unabridged Dictionary 1913 Edition