Synonyms of bidder

1 Syllable
player, foe, con, match
2 Syllables
entrant, anti, bandit, rival
3 Syllables
write-in, job-hunter, opponent, resisters, assailant, resister, oppugnant, dissentient, aspirant, enemy, challenger, disputant, opposer, pothunters, contestant, litigant
4 Syllables
solicitant, antagonist, competitor, counteragent, adversary, candidate, opposition
5 Syllables
oppositionist