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Synonyms

abnormal

American  
[ab-nawr-muhl] / æbˈnɔr məl /

adjective

  1. not normal, average, typical, or usual; deviating from a standard.

    abnormal powers of concentration; an abnormal amount of snow; abnormal behavior.
    Synonyms:
    odd, unnatural, deviant, irregular, aberrant, anomalous

  2. extremely or excessively large.

    abnormal profit.
abnormal British  
/ æbˈnɔːməl /

adjective

  1. not normal; deviating from the usual or typical; extraordinary

  2. informal odd in behaviour or appearance; strange

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Related Words

See irregular.

Other Word Forms

  • abnormally adverb
  • abnormalness noun
  • superabnormal adjective
  • superabnormally adverb

Etymology

Origin of abnormal

First recorded in 1850–55; ab- + normal; replacing anormal, from Medieval Latin anōrmālus, variant of anōmālus anomalous, influenced by Latin norma norm

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.