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atypical

[ey-tip-i-kuh l]
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adjective
  1. not typical; not conforming to the type; irregular; abnormal: atypical behavior; a flower atypical of the species.
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Also a·typ·ic.

Origin of atypical

First recorded in 1880–85; a-6 + typical
Related formsa·typ·i·cal·i·ty, nouna·typ·i·cal·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for atypical

anomalous, unnatural, abnormal, strange, odd, peculiar, divergent, aberrant, deviant, different, exceptional, irregular, preternatural, heteroclite, unrepresentative

Examples from the Web for atypical

Contemporary Examples of atypical

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British Dictionary definitions for atypical

atypical

adjective
  1. not typical; deviating from or not conforming to type
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Derived Formsatypically, adverb
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

Word Origin and History for atypical

adj.

1847, from a- (2) "not" + typical. Related: Atypically.

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Online Etymology Dictionary, © 2010 Douglas Harper

atypical in Medicine

atypical

(ā-tĭpĭ-kəl)
adj.
  1. Not corresponding to the normal form or type; not typical.
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Related formsa•typi•cal•ly adv.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.