philanderer
noun
phi·lan·der·er
| \ fə-ˈlan-dər-ər
\
\
plural philanderers
Definition of philanderer
disapproving
: a man who has sexual relations with many women
especially
: a man who is unfaithful to his wife or partner
… on a realistic level King is an incorrigible philanderer who deserts his gentle wife … — Louise Westling [Florenz] Ziegfeld's private life was messy. He was an outrageous philanderer who at one point kept a mistress in the same hotel he lived in with Anna Held. — Alicia Metcalf Miller Until then, public officials who were philanderers or alcoholics … pretty much operated with immunity from disclosure so long as their professional performance was unaffected. — Tom Goldstein