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fuckup

American  
[fuhk-uhp] / ˈfʌkˌʌp /

noun

Slang: Vulgar.
  1. a person who acts in a stupid or careless way, especially habitually.

    Even with those credentials he's a monumental fuckup as a lawyer.

  2. a careless or stupid mistake, or something done badly or inadequately.

    They tried to hide their catastrophic fuckup for three months.


Etymology

Origin of fuckup

First recorded in 1955–60; noun use of verb phrase fuck up