whoops
/wʊps
/British (also whoops-a-daisy)
exclamation informal
Expressing mild dismay or regret (used when someone has had an accident or made a mistake): Whoops! I nearly dropped it...
- I'm walking along, carrying Jackson, and then whoops!
- That was the consensus on the left - until, whoops!
- At the time, I took a lot of criticism by people saying it's not happening to any of us - and whoops!
Origin
1920s: probably an alteration of upsy-daisy; compare with oops.