/ Dictionary / Index U undersell: Meaning and Definition of Find definitions for: un•der•sell Pronunciation: (un"dur-sel'), [key] — -sold, -sell•ing. to sell more cheaply than. to advertise with restraint; understate the merits of (something): By underselling his product, he let his hearers convince themselves of its importance. to sell for less than the actual value. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: undersell (Thesaurus) under secretary underservant Related Content Daily Word Quiz: blanch Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language