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muck up

Meaning: to ruin something, or do it very badly

For example:

  • I studied really hard for the exam because I didn't want to muck it up.

  • They mucked up my order and sent me the wrong books.

Quick Quiz:

Jamie's job was to take care of the newspaper ad. He mucked it up by
  1. getting a cheap advertising rate
  2. getting it done before the deadline
  3. putting the wrong phone number in the ad

Discuss: muck up

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