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Meaning of underbuy

un•der•buy

Pronunciation: (un"dur-bī'), [key]
— v., -bought, -buy•ing.
—v.t.
  1. to buy more cheaply than (another).
  2. to buy at less than the actual value.
—v.i.
  1. to buy an insufficient quantity, as of supplies or stock in trade.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.