Definition of oopsie in English:

oopsie

(also oopsy)

Pronunciation /ˈo͞opsē/ /ˈupsi/ /ˈo͝opsē/ /ˈʊpsi/

exclamation

informal
  • Used to show recognition of a mistake or minor accident, often as part of an apology.

    • ‘oopsie, our mistake!’

nounoopsies

informal
  • A minor mistake or accident.

    • ‘we've fixed our oopsie’

Origin

1950s perhaps shortened from oopsy-daisy, or perhaps from oops + -y.