The winningbidder is likely to pay as much as £2 billion.
Times, Sunday Times (2008)
The winningbidder is due to be announced in the next few weeks.
The Sun (2015)
In some cases, it is clear that clients were overcharged and there were some examples of the winningbidders providing kickbacks to their rivals.
Times, Sunday Times (2009)
Definition of 'bidder'
bidder
(bɪdəʳ)Explore 'bidder' in the dictionary
countable noun
A bidder is someone who offers to pay a certain amount of money for something that is being sold. If you sell somethingto the highest bidder, you sell it to the person who offers the most money for it.