A person who offers a specific amount of money for something at an auction or in a competitive process. Someone who makes a formal offer to buy or contract for goods or services.
From Middle English 'bidden' meaning 'to ask' or 'to pray', from Old English 'biddan'. Originally meant one who asks or requests, evolved to specifically mean one who offers money in competition.
The evolution from 'asking' to 'offering' in 'bidder' reflects the fundamental psychology of commerce - every purchase begins as a request that transforms into a competitive offer. Ancient prayers became modern financial propositions.
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