1. people who make bids that are lower than the winning bid in an auction or competitive bidding process
Usage: plural form

Examples

• The underbidders were disappointed when the house sold for more than they offered.
• Several underbidders at the art auction expressed interest in similar pieces.
• The contractor thanked all the underbidders for their participation in the bidding process.
• Many underbidders decided to wait for the next auction.
• The auctioneer announced the winning bid while the underbidders looked on.
• Some underbidders formed a group to pool resources for future auctions.