noun / verb
cuckold
KUK-ohld/ˈkʌkəʊld/
A man whose partner has sexual relations with someone else.
The husband discovers his partner’s betrayal and realizes he is a cuckold.

Etymology
The cuckoo-based insult may refer either to the female bird's supposed changing of mates or to its laying eggs in another bird's nest. That image was applied to a betrayed husband.
In context
Who would not make her</b> <b>husband a cuckold to make him a monarch?
More examples
- She cuckolded her husband during their first year of marriage.
- The novel portrays several cuckolds with sympathy rather than ridicule.
- In their consensual sexual arrangement, he enjoys the cuckold role.
Forms
cuckold · cuckolds · cuckolded · cuckolding
cuckoldry noun — The condition of being a cuckold.
Similar words
- betray
- Can describe any breach of trust, not just sexual infidelity.
- cheat
- Takes 'on' to identify the betrayed partner, regardless of gender.