We found 9 dictionaries that include the word muck-up:

General (8 matching dictionaries)

1. muck-up, muck-up: Collins English Dictionary [home, info]
2. muck-up: Wordnik [home, info]
3. muck-up: Cambridge Advanced Learner's Dictionary [home, info]
4. muck-up: Wiktionary [home, info]
5. muck-up: Infoplease Dictionary [home, info]
6. muck-up: Dictionary.com [home, info]
7. muck-up: Cambridge International Dictionary of Phrasal Verbs [home, info]
8. muck-up: Dictionary/thesaurus [home, info]

Slang (1 matching dictionary)

9. muck-up: English slang and colloquialisms used in the United Kingdom [home, info]

Definitions from Wiktionary (muck-up) ▸ noun:  (informal) The act of botching something; an incompetent mistake. ▸ noun:  (Australia, informal) A prank.screwup, cock-up, goof-up, botch, goof, balls-up, mull, muff, misfuck, muck, more... ▸ Words similar to muck-up ▸ Usage examples for muck-up ▸ Idioms related to muck-up ▸ Civic discussion about muck-up (New!) ▸ Popular adjectives describing muck-up ▸ Words that often appear near muck-up ▸ Rhymes of muck-up ▸ Invented words related to muck-up