Meaning & use
infidelity
Unfaithfulness to a spouse or romantic partner, typically through a secret sexual or emotional relationship with someone else.
See it in a sentence
Years after discovering his infidelity, she still found it hard to trust anyone fully.
The novel explores how infidelity slowly unravels an otherwise happy marriage.
A note on using this word
Infidelity can refer to emotional betrayal as well as physical cheating, distinguishing it from "adultery," which implies a sexual act.
Words with a similar meaning
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Words with an opposite meaning
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