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Classic usage
Reading level: hard
Estimated CEFR level: C1 — Advanced
Estimated from word frequency; not an official CEFR classification.
From Middle English retarden, from Anglo-Norman or Latin, from Anglo-Norman retarder, from Latin retardāre (“to retard”), from re- + tardus (“slow”).
idiot, imbecile, cretin, moron, changeling, half-wit
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Classic usage
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