Definition of abnormal in English:



  • Deviating from what is normal or usual, typically in a way that is undesirable or worrying:

    ‘the illness is recognizable from the patient's abnormal behaviour’
    • ‘Seabed sensors detect abnormal wave movements and relay the information to scientists.’
    • ‘MPs live quite an abnormal life, and a lot of the time they are away from home.’
    • ‘A true food allergy is an abnormal response to a food triggered by the immune system.’
    • ‘The level was so high that a second reading was taken and although this was lower it was still so abnormal as to be fatal.’
    • ‘The demand for tickets had been abnormal, and the committee had to refuse a great number who applied.’
    • ‘The abnormal hike in fuel prices leads to increase in prices of essential commodities.’
    • ‘She speculated that abnormal electrical activity in the heart or brain may have been the reason.’
    • ‘The boy told the court his behaviour had been abnormal and not the sort of thing he wanted to do in the future.’
    • ‘The condition is rare and is caused by the inheritance of an abnormal gene from an affected parent.’
    • ‘All women are supposedly naturally maternal and any woman who rejects this role is seen as deviant and abnormal.’
    • ‘His life has been so abnormal it is no surprise that he has such unusual views.’
    • ‘Crime, rather than being abnormal and uncommon, may be considered a routine part of life.’
    • ‘Fusion in this case is somewhat of a worry because these are highly abnormal cells.’
    • ‘Interferon is produced naturally in the body and helps fight infection or abnormal cells.’
    • ‘Cells normally divide in a controlled way, but abnormal cells keep on dividing, which can form a lump.’
    • ‘His abnormal memory power is not restricted just to the game, but aids him in his office work.’
    • ‘Every episode marked him, though there is no evidence of any abnormal behaviour.’
    • ‘As far as I can judge he sees nothing abnormal or peculiar about any part of this routine.’
    • ‘My greatest work was the reconstruction of a congenitally abnormal heart.’
    • ‘Some abnormal smears do in fact revert to normal without treatment, but some go on to become cancerous.’
    unusual, uncommon, atypical, untypical, non-typical, unrepresentative, rare, isolated, irregular, anomalous, deviant, deviating, divergent, wayward, aberrant, freak, freakish
    strange, odd, peculiar, curious, bizarre, weird, queer
    eccentric, idiosyncratic, quirky
    unexpected, unfamiliar, unconventional, surprising, unorthodox, singular, exceptional, extraordinary, out of the ordinary, out of the way
    unnatural, perverse, perverted, twisted, warped, corrupt, unhealthy, distorted, malformed
    out of the common
    funny, oddball, off the wall, wacky, wacko, way out, freaky, kinky
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Mid 19th century: alteration (by association with Latin abnormis monstrous) of 16th-century anormal, from French, variant of anomal, via Latin from Greek anōmalos (see anomalous).