Etymology

fuckup

F4U1C3K5U1P3

Today it means: A serious mistake. Full definition →

English fuck updeverb. ← Middle English up ← Old English upp
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The story

  1. Proto-Indo-European*pewǵ-
  2. Proto-Germanic*fukkōną
  3. Old English*fuccian
  4. Middle English*fukken
  5. Englishfuck
  6. Proto-Indo-European*upó
  7. Proto-Germanic*ub
  8. Proto-Germanic*upp
  9. Proto-West Germanic*upp
  10. Old Englishupp
  11. Middle Englishup
  12. Englishup
  13. Englishfuck updeverb.
  14. English todayfuckup

Deverbal from fuck up.

Etymology from Wiktionary, CC BY-SA 4.0.