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Noun: whoopsie  wûp-see
Usage: informal
  1. A minor inadvertent mistake usually observed in speech or writing or in small accidents or memory lapses etc.
    - slip, slip-up [informal], miscue, parapraxis
  2. [Brit, informal] (childish) excrement
    - poo [Brit, informal], poo-poo [Brit, informal], doo-doo [informal]
Interjection: whoopsie  wûp-see
Usage: informal
  1. Exclamation used to acknowledge a mistake or accident
    - oops, whoops, whoops-a-daisy [informal], oops-a-daisy [informal]

Derived forms: whoopsies

Type of: error, fault, mistake