What is the past tense of "bid"?There is no such word as "bidded"

 "Bidded" is NOT a word.

"Bid" is verb with dual meaning, both being irregular verbs .

In the context of discussing eBay or online auctions, "To bid an amount" is the term normally used.
    The Infinitive verb being "bid", the Past Tense, or Preterite, also being "bid" and finally the Past Participle being "bid" as well.

                        I bid right before the auction ends, which I call "sniping."
                        He bid just three seconds before the auction ended, and won.
                        She bid $100 on the first day of the auction, and was already outbid by the second day.

"To bid farewell" means to say good bye.
    The Infinitive verb being "bid", the Past Tense, or Preterite, being "bade" and the Past Participle being "bidden"

                            I bid them farewell at dawn.
                        He bade them farewell at dawn.
                        She had bidden them farewell at dawn.

There is no such word as "Outbidded" either.

                         I was outbid in the last few seconds.
                        He outbid me in the last few seconds.
                        She had outbid me by the time the auction finished.