Meaning of oversell

o•ver•sell

Pronunciation: (ō"vur-sel'), [key]
— v., -sold, -sell•ing.
—v.t.
  1. to sell more of (a stock, product, etc.) than can be delivered.
  2. to sell aggressively, as by using high-pressure merchandising techniques.
  3. to emphasize the good points of excessively and to a self-defeating extent: She so oversold the picnic that I became convinced I'd have a better time at the movies.
—v.i.
  1. to sell something aggressively.
  2. to make extreme claims for something or someone.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.