/ Dictionary / Index U undergo: Meaning and Definition of Find definitions for: un•der•go Pronunciation: (un"dur-gō'), [key] — -went, -gone, -go•ing. to be subjected to; experience; pass through: to undergo surgery. to endure; sustain; suffer: to undergo sustained deprivation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: undergo (Thesaurus) underglaze undergrad Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language