abnormal

1 being out of the ordinary a completely abnormal school day, because half of the kids were out sick Synonyms aberrant, aberrated, exceptional, anomalous, atypical, especial, exceeding, extraordinaire, extraordinary, freak, odd, peculiar, phenomenal, preternatural, rare, singular, uncommon, uncustomary, unique, unusual, unwontedRelated Words conspicuous, notable, noticeable, outstanding, prominent, remarkable, salient, striking; bizarre, deviant, eccentric, freakish, monstrous, oddball, outlandish, quaint, strange, weird; incomprehensible, inconceivable, incredible, unimaginable, unthinkableNear Antonyms everyday, familiar, frequentAntonyms common, customary, normal, ordinary, typical, unexceptional, unextraordinary, usual

2 departing from some accepted standard of what is normal noticed his abnormal breathing and took him to the emergency room Synonyms aberrant, aberrational, deviant, anomalous, atypical, deviate, devious, irregular, unnatural, untypicalRelated Words unrepresentative; extraordinary, preternatural; rare, uncommon, uncustomary, unusual, unwonted; bizarre, curious, far-out, funny, kinky, odd, outlandish, out-of-the-way, outré, peculiar, quaint, queer, queerish, quirky, remarkable, screwy, strange, wacky (also whacky), way-out, weird, wild; eccentric, freakish, idiosyncratic, nonconformist, unconventional, unorthodox; extraordinary, preternatural; rare, uncommon, uncustomary, unusual, unwonted; odd, peculiar, strangeNear Antonyms common, commonplace, everyday, familiar, ordinary, routine, run-of-the-mill, run-of-the-mine (or run-of-mine), unexceptional, unremarkable, workaday; customary, usual, wonted; archetypal (also archetypical), average, characteristic, representativeAntonyms natural, normal, regular, standard, typical