Meaning

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

verb bid lower than a competing bidder

verb bid too low

originEtymology tree Proto-Indo-European *h₁én Proto-Indo-European *h₁entér Proto-Indo-European *(H)n̥dʰí Proto-Indo-European *-ér Proto-Indo-European *(H)n̥dʰér Proto-Germanic *under Proto-West Germanic *undar Old English under- Middle English under- English under- English bid English underbid From under- + bid.

Etymology from Wiktionary, CC BY-SA 3.0