Dictionary
ump•teenth
Pronunciation: (ump'tēnth'), [key]—
adj. Informal.
of an indefinitely large number in succession:
He was the umpteenth person to arrive. Also,um•teenthPronunciation: (um'tēnth'). [key]Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.