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Classic usage
Reading level: hard
Estimated CEFR level: B1 — Intermediate
Estimated from word frequency; not an official CEFR classification.
From Middle English bitterli, biterli, biterliche, from Old English biterlīċe, bitterlīċe (“bitterly”), equivalent to bitter + -ly. Cognate with German Low German bitterlik (“bitterly”), German bitterlich (“bitterly”), Swedish bitterligen (“bitterly”).
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Classic usage
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