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Interjection: oopsie  oop-see
Usage: informal
  1. Exclamation used to acknowledge a mistake or accident
    "oopsie! I spilled coffee on my shirt";
    - oops, whoops, whoops-a-daisy [informal], oops-a-daisy [informal], whoopsie [informal]
Noun: oopsie  oop-see
Usage: informal
  1. A minor mistake or accident
    "She made an oopsie while typing the email"

Derived forms: oopsies