See more synonyms for uncommon on Thesaurus.com
adjective, un·com·mon·er, un·com·mon·est.
  1. not common; unusual; rare: an uncommon word.
  2. unusual in amount or degree; above the ordinary: an uncommon amount of mail.
  3. exceptional; remarkable.

Origin of uncommon

First recorded in 1540–50; un-1 + common
Related formsun·com·mon·ness, noun

Synonyms for uncommon

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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for uncommon


  1. outside or beyond normal experience, conditions, etc; unusual
  2. in excess of what is normalan uncommon liking for honey
  1. an archaic word for uncommonly (def. 2)
Derived Formsuncommonness, noun
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 uncommon

1540s, "not possessed in common," from un- (1) "not" + common (adj.). Meaning "not commonly occurring, unusual, rare" is recorded from 1610s. Related: Uncommonly.

Online Etymology Dictionary, © 2010 Douglas Harper