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Classic usage
Pronunciation: /ˈpɝ.fɪ.di/
Reading level: hard
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
From Middle French perfidie, from Latin perfidia from perfidus (“faithless, treacherous, false”), from fides (“faith”); related to, for example, English fidelity.
perfidiousness, treachery
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tap / space
Classic usage
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