What is another word for By-bidder?
Pronunciation: [ba͡ɪbˈɪdə] (IPA) 
A by-bidder is someone who makes a secondary offer or bid after the initial bid in an auction has been made. Some synonyms for by-bidder include secondary bidder, backup bidder, competing bidder, and late bidder. Other related words include underbidder, who makes a lower offer than the highest bidder, and outbidder, who exceeds the highest bid with their own offer. Additionally, a bidder who drops out before the end of the auction may be referred to as a withdrawn bidder, while a bidder who consistently makes high bids may be called a determined bidder or a persistent bidder.
