- innumerable; many.
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
- very manyumpteen things to do
- (as pronoun)umpteen of them came
C20: from umpty a great deal (perhaps from -enty as in twenty) + -teen ten
Word Origin and History for umteen
Online Etymology Dictionary, © 2010 Douglas Harper