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uncommon

[uhn-kom-uh n] /ʌnˈkɒm ən/
adjective, uncommoner, uncommonest.
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
1540-1550
1540-50; un-1 + common
Related forms
uncommonness, noun
Synonyms
1. scarce, infrequent; odd, singular, strange, peculiar, queer. 2. extraordinary. 3. outstanding.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for uncommonest

uncommon

/ʌnˈkɒmən/
adjective
1.
outside or beyond normal experience, conditions, etc; unusual
2.
in excess of what is normal: an uncommon liking for honey
adverb
3.
an archaic word for uncommonly (sense 2)
Derived Forms
uncommonness, 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
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Word Origin and History for uncommonest

uncommon

adj.

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
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