Intermediate (B1)
IPA: //ʌnˈbɪd//
KK: /ʌnˈbɪd/
Definition
Not requested or invited; something that occurs without being asked for.
Example
The unbid guests arrived at the party unexpectedly.
Conversation

Did you see that unbid painting at the gallery yesterday?

Yeah, it was really unique!

I wonder why it was left unbid during the auction.

Maybe it just didn't catch anyone's eye like the others did.
Synonyms & Antonyms
Synonyms
uninvited
unasked
unrequested
Definition
To cancel a bid that was previously made.
Example
He decided to unbid on the auction item after reconsidering his budget.
Tense Forms
Past: unbid
Past Participle: unbid
Conversation

I heard you had to unbid on that auction item.

Yeah, it was just too expensive for me in the end.

That makes sense; sometimes you have to stick to your budget.
Root Explanation
Unbid → It is formed from "un-" (meaning not) and "bid" (from Old English "biddean", meaning to offer or request). The word "unbid" means not offered or not requested.
Memory Tip
Think of 'not' ('un-') having made an 'offer' ('bid') — that's why unbid means something that was not offered.
Visually Confused Words
unbuild
unbraid
unblind
sunbird
nunbird
dunbird
upbid
unrid