[1] : The Collaborative International Dictionary of English v.0.48

underbid \un`derbid"\, v. t.
   to bid less than, as when a contract or service is offered to
   the lowest bidder; to offer to contract, sell, or do for a
   lower price than.
   1913 webster

[2] : WordNet (r) 2.0

underbid
     v 1: bid a hand of cards at less than the strength of the hand
          warrants
     2: bid lower than a competing bidder ant: outbid
     3: bid too low ant: overbid
     also: underbidding
see also:
outbid overbid underbidding 

Underbid >> U Words
Underbid, definition of term: Underbid
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