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• mess-up
  mess-up

  noun

  a blunder; state of confusion; mix-up.
• mess up
  mess up

  Create disorder in; muddle or ruin. For example, On rainy days the children really mess up the house , or He had a way of messing up his own business . [c. 1900]

mess-up

American  

[mes-uhp] / ˈmɛsˌʌp /

noun

mess-ups plural

1. a blunder; state of confusion; mix-up.

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mess up Idioms  

1. Create disorder in; muddle or ruin. For example, On rainy days the children really mess up the house , or He had a way of messing up his own business . [c. 1900]

2. Make a mistake, especially from nervousness or confusion, as in He messed up and took the wrong dossier to the meeting , or Jill swore she would never mess up again . [ Colloquial ; early 1900s]

3. Beat up, manhandle, as in Joe got messed up in a barroom brawl . [ Slang ; early 1900s]

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Other Word Forms

Noun Inflected Forms

• mess-ups
  plural

Etymology

Origin of mess-up

First recorded in 1900–05; noun use of verb phrase mess up

Example Sentences

"I've been in a daze ever since I saw the announcement. Until more information comes out, I need to be careful not to mess up my daily life from overthinking," wrote X user Yachi.

From Barron's • Jun. 26, 2026

When she asks me to place a hand on my heart again, I do, repeating, “I am here. I did not mess up my kid forever. My timing is impeccable.”

From Slate • May 10, 2026

Bowens worries that some people will fraudulently overstate deductions and that people who mess up accidentally could get hurt as the IRS tries to enforce the law.

From The Wall Street Journal • Apr. 4, 2026

"A classic example is around diet or exercise and people think that if they mess up one day then the whole thing is pointless," she tells BBC's What's Up Doc podcast.

From BBC • Dec. 26, 2025

But it’s sort of funny, because even without any lines to mess up, I’m nervous.

From "Simon vs. the Homo Sapiens Agenda" by Becky Albertalli