Archaic or dialectal term meaning accomplished, skilled, or suitable; competent.
From Latin 'compertus' (discovered, known, proven), the past participle of 'comperire' (to find out). This word is extremely rare in modern English, preserved mainly in historical legal documents and old literature.
This word is practically extinct—you're unlikely to encounter it outside of medieval manuscripts or legal archives. It shows how language naturally loses words it doesn't need anymore, though the Latin root survived in modern 'competent' and 'expertise'!
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