underbid

To bid lower than (a competitor).

To bid less than the full value of (one’s hand) in bridge.

To make an unnecessarily low bid.

To bid or offer less than (another), as at auctions; offer to execute work, supply goods, etc., at a lower price than (another).

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.

To bid too low

To bid lower than another

To bid less than the full value of a hand of cards

A bid that is lower than another.

bid (a hand of cards) at less than the strength of the hand warrants