adjective, adverb British Slang.
- muck-up day,
Origin of mucking
verb (used with object)
- to ruin; bungle (often followed by up).
- to put into a state of complete confusion (often followed by up).
Origin of muck
Examples from the Web for mucking
His scapegoats then, as now, were the United States and Europe, which he blamed for mucking about in his backyard.Ukraine Is On the Verge Of War And Putin Is To Blame|Michael Weiss|February 20, 2014|DAILY BEAST
The Senate Finance Committee has rolled up its sleeves this week, and is mucking about in the fine print of amendments.
Did you consult study any guides as you were mucking your way through?
"I don't mean to have any one else mucking around," growled Dunn in answer.The Bittermeads Mystery|E. R. Punshon
I took no more trouble than to turn my back on Grimalson, who was arguing that all this water was mucking the dry provisions.Foe-Farrell|Arthur Thomas Quiller-Couch
Gob, that puts the bloody kybosh on it if old sloppy eyes is mucking up the show.Ulysses|James Joyce
Yes, you've taken to mucking your work—doing it in a most slovenly way.L'Assommoir|Emile Zola
We got the idea from the British Tommy, only he calls it "mucking it."Into the Jaws of Death|Jack O'Brien
Word Origin for muck
mid-13c., "cow dung and vegetable matter spread as manure," from a Scandinavian source, cf. Old Norse myki, mykr "cow dung," Danish møg, from Proto-Germanic *muk-, *meuk- "soft." Meaning "unclean matter generally" is from c.1300. Muck-sweat first attested 1690s.
late 14c., "to dig in the ground," also "to remove manure," early 15c., "to spread manure, cover with muck," from muck (n.). Meaning "to make dirty" is from 1832; in the figurative sense, "to make a mess of," it is from 1886; to muck about "mess around" is from 1856. Related: Mucked; mucking.