infidelity

noun in·fi·del·i·ty \ˌin-fə-ˈde-lə-tē, -(ˌ)fī-\

plural in·fi·del·i·ties

Definition of INFIDELITY

: lack of belief in a religion

a : unfaithfulness to a moral obligation : disloyalty

b : marital unfaithfulness or an instance of it

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15th century

Synonyms: disloyalty, faithlessness, falseness, falsity, inconstancy, perfidiousness, perfidy, unfaithfulness

Antonyms: allegiance, constancy, devotedness, devotion, faith, faithfulness, fealty, fidelity, loyalty

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