Cuckolding is a term used to describe when a man's wife or partner has sexual relations with someone else. Synonyms for cuckolding include "adultery", "infidelity", "cheating", "betrayal", "unfaithfulness" and "treachery". Other terms that may be used in this context include "hotwifing", "swinging", and "open marriage". These terms all describe different types of consensual non-monogamy, which is when couples engage in sexual activities with other people with the full knowledge and consent of their partner. However, it's important to note that cheating and cuckolding are not the same thing, as cuckolding is a consensual act, whereas cheating is a breach of trust.