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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
From Middle English fendly, feendly (“hostile, devilish”), from Old English fēondliċ (“hostile”), corresponding to fiend + -ly. Cognate with Dutch vijandelijk (“hostile”), German feindlich (“hostile”), Danish fjendtlig (“hostile”), Swedish fiendtlig, fientlig (“hostile”).
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Classic usage
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