See more synonyms for umpteen on
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 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for umteen


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

Word Origin for umpteen

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.

Online Etymology Dictionary, © 2010 Douglas Harper