Bider or Bidder: How To spell?
The word Bider is misspelled against Bidder, a noun meaning "One who bids or offers a price."
Bidder has double "dd" is mispronounced as "d"Remember double 'DD' in between the strings Bi & er which should not be misspelled with single 'D'
Wrong Spelling:  Bi-d-er  Correct Spelling:  Bi-dd-er 
Find more wrongly spelled words of Bidder to spell it well.