endorsed authoritatively as having met certain requirements; guranteed; as, certified milk; certified mail; a certified check. Opposite of uncertified. [WordNet 1.5]
legally insane according to clinical criteria. [WordNet 1.5]
holding appropriate documentation and officially on record as qualified to perform a specified function or practice a specified skill. [WordNet 1.5]

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THESAURUS

certified

accepted, acknowledged, actual, admitted, affirmed, alleged, allowed, announced, approved, ascertained, asserted, asseverated, assured, attested, authenticated, averred, avouched, avowed, borne out, categorically true, certain, circumstantiated, conceded, confessed, confirmed, corroborated, countersigned, covered, decided, declared, demonstrated, deposed, determinate, determined, documentary, effectual, endorsed, ensured, enunciated, established, factual, fixed, granted, guaranteed, historical, in the bag, insured, made sure, manifestoed, nailed down, not in error, notarized, objectively true, on ice, open-and-shut, pledged, predicated, professed, pronounced, proved, proven, ratified, real, received, recognized, sealed, secure, secured, set, settled, shown, signed, stamped, stated, substantiated, sure, sure-enough, sworn, sworn and affirmed, sworn to, tested, tried, true, true as gospel, truthful, unconfuted, undenied, underwritten, undoubted, unerroneous, unfallacious, unfalse, unmistaken, unquestionable, unrefuted, validated, veracious, verified, veritable, vouched, vouched for, vowed, warranted

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