certifiable

1 being exactly as appears or as claimed a professor who is regarded by his colleagues as a certifiable genius Synonyms bona fide, authentic, certified, dinkum [Australian & New Zealand], echt, genuine, honest, pukka (also pucka), real, right, sure-enough, trueRelated Words actual, historical, original; lawful, legal, legitimate; identifiable, recognizable, verifiable; proven, substantiated, validated, verified; incontestable, incontrovertible, indisputable, indubitable, irrefutable, undeniable, undoubted, unmistakable, unquestionable; veritable, very; accurate, correct, proper; pure, unadulterated, unalloyedNear Antonyms artificial, factitious, imitation, man-made, simulated, synthetic, unnatural; concocted, fabricated, manufactured; deceptive, delusive, delusory, misleadingAntonyms bogus, counterfeit, fake, false, mock, phony (also phoney), pseudo, sham, spurious, suppositious, supposititious, unauthentic, unreal

2 having or showing a very abnormal or sick state of mind raised by a feckless father and a mother who was clearly certifiable Synonyms balmy, barmy [chiefly British], bats, batty, bedlam, bonkers, brainsick, bughouse [slang], insane, crackbrained, cracked, crackers, crackpot, cranky [dialect], crazed, crazy, cuckoo, daffy, daft, demented, deranged, fruity [slang], gaga, haywire, kooky (also kookie), loco [slang], loony (also looney), loony tunes (or looney tunes), lunatic, mad, maniacal (also maniac), mental, meshuga (or meshugge also meshugah or meshuggah), moonstruck, non compos mentis, nuts, nutty, psycho, psychotic, scatty [chiefly British], screwy, unbalanced, unhinged, unsound, wacko (also whacko), wacky (also whacky), wud [chiefly Scottish]Related Words dotty, fey, loopy, off, potty [chiefly British], teched (or tetched), touched; aberrant, delirious, delusional, delusionary, disordered, disturbed, neurotic, obsessive-compulsive, paranoiac (also paranoic), paranoid (also paranoidal), schizoid, schizophrenic, sociopathic; eccentric, odd, oddball, pixilated (also pixillated), queer, strange; foolish, senseless, witless; irrational, unreasonable; amok (or amuck), ape, ballistic, bananas, berserk, nuclear; depressed; distracted, distraught, frantic, frenzied, haywire, hysterical (also hysteric), raving, wigged-out; fixated, monomaniac, monomaniacal, obsessedNear Antonyms clear, lucid, rational, reasonable; judicious, sensible, wise; healthy, normal, well-adjusted; unneuroticAntonyms balanced, compos mentis, sane, sound, uncrazy