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extramarital relations

NOUN

infidelity

Synonyms

STRONGEST

adultery affair betrayal duplicity treachery

STRONG

cheating faithlessness falseness falsity inconstancy lewdness perfidiousness perfidy treason unfaithfulness

WEAK

bad faith treacherousness two-timing

Antonyms

STRONGEST

faithfulness honesty loyalty

WEAK

fidelity

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.