perfidy
0 antonyms and opposites of perfidy, grouped by meaning.
Noun — A state or act of violating faith or allegiance; violation of a promise or vow, or of trust.
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Etymology
From Middle French perfidie, from Latin perfidia from perfidus (“faithless, treacherous, false”), from fides (“faith”); related to, for example, English fidelity.
Full origin of perfidy →