cuckold

noun

1. A man married to an adulterous spouse, especially when he is unaware or unaccepting of the fact.

   “If I never marry, I shall never be a cuckold.”

   “You see, it happened that two lieutenantesses were fighting, because their husbands had made cuckolds of them ...”

   “In the early English drama, no play better approximates Ovid's contemptuous portrait of the willing cuckold than does Thomas Middleton's Chaste Maid in Cheapside (ca. 1612).”

   “Nothing captured the alt-right mentality better than cuckservative, with its taunt that moderation is unmanly and certain conservative males are cuckolds.”

2. A man who is attracted to or aroused by the sexual infidelity of a partner.
3. A West Indian plectognath fish, Rhinesomus triqueter.
4. The scrawled cowfish, Acanthostracion quadricornis and allied species.
5. Synonym of fringed filefish.

verb

1. (transitive)To make a cuckold or cuckquean of someone by committing adultery, or by seducing their partner or spouse.

   “"Gave her anything she wanted - her own car, her own bank account, a free leg to amuse herself as she pleased. Of course she hated him for it. Cuckolded him, too, naturally."”

   “Hey, I would never cuckold one of my friends. That’s way not cool.”