[ muhk ]
See synonyms for: muckmuckedmucking on

  1. moist farmyard dung, decaying vegetable matter, etc.; manure.

  2. a highly organic, dark or black soil, less than 50 percent combustible, often used as a manure.

  1. mire; mud.

  2. filth, dirt, or slime.

  3. defamatory or sullying remarks.

  4. a state of chaos or confusion: to make a muck of things.

  5. Chiefly British Informal. something of no value; trash.

  6. (especially in mining) earth, rock, or other useless matter to be removed in order to get out the mineral or other substances sought.

verb (used with object)
  1. to manure.

  2. to make dirty; soil.

  1. to remove muck from (sometimes followed by out).

  2. Informal.

    • to ruin; bungle (often followed by up).

    • to put into a state of complete confusion (often followed by up).

Verb Phrases
  1. muck about / around Informal. to idle; waste time; loiter.

Origin of muck

1200–50; Middle English muc, muk<Old Norse myki cow dung

Words Nearby muck Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use muck in a sentence

British Dictionary definitions for muck


/ (mʌk) /

  1. farmyard dung or decaying vegetable matter

  2. Also called: muck soil an organic soil rich in humus and used as a fertilizer

  1. dirt or filth

  2. earth, rock material, etc, removed during mining excavations

  3. slang, mainly British rubbish

  4. make a muck of slang, mainly British to ruin or spoil

  1. to spread manure upon (fields, gardens, etc)

  2. to soil or pollute

  1. (often foll by out) to clear muck from

Origin of muck

C13: probably of Scandinavian origin; compare Old Norse myki dung, Norwegian myk

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012