unfaithful
word
Definition
Describes someone who does not stay loyal to their partner or is not faithful to a promise or belief. Most often, it refers to cheating in a romantic relationship.
Usage & Nuances
Commonly used for romantic relationships to mean cheating; can also apply to breaking loyalty in other contexts (e.g., religion). Formal or neutral. Do not confuse with 'disloyal', which is broader. Collocates with 'be', 'become', or 'feel'. 'Unfaithful to' is the standard pattern.
Example Sentences
She was unfaithful to her husband.
basic
Being unfaithful hurt their relationship.
basic
He felt guilty for being unfaithful.
basic
If you're unfaithful, it's better to admit it than to lie.
natural
Some people think emotional cheating is being unfaithful too.
natural
After finding out he was unfaithful, she decided to move on.
natural