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See more synonyms for umpteen on Thesaurus.com
adjective Informal.
  1. innumerable; many.
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Also ump·steen [uhmp-steen] /ˈʌmpˈstin/, um·teen.

Origin of umpteen

1915–20; ump(ty), fanciful designation for an indeterminate number (with -ty as in twenty, etc.) + -teen
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words


British Dictionary definitions for umteen


  1. informal
    1. very manyumpteen things to do
    2. (as pronoun)umpteen of them came
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Derived Formsumpteenth, noun, adjective

Word Origin

C20: from umpty a great deal (perhaps from -enty as in twenty) + -teen ten
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 umteen


1917, World War I army slang, from umpty + teen. Related: Umpteenth.

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Online Etymology Dictionary, © 2010 Douglas Harper