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A foul, gloppy substance. I can't believe they expect us to eat this mung! He fell into the pond and came out covered in black, odious mung.
1. To ruin or damage something; to mess up something. In this usage, a noun of pronoun can be used between "mung" and "up." The threat of a hurricane really munged up our vacation plans! Boy, you really munged this engine up. When was the last time you got your oil changed? I munged up my knee in practice last night so I won't be able to play on Saturday.
2. To make a mistake; to mess up. I think I munged up by putting it in the oven too soon. You munged up, Dave. Just admit and we can all move on.
3. To fail or malfunction. The printer munged up last night so I still haven't printed my report. It looks like the carburetor is totally munged up—you'll have to get the whole thing replaced.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
mung something up
Sl. to mess something up. Don't mung it up this time. The team munged up the play, and the coach blasted them but good.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
1. and MUNG (məŋ) n. something that is mashed until no good; anything nasty or gloppy. (An acronym, but possibly a coinage before it became an acronym.) This mung is cruel and unusual punishment. I demand to see the warden.
2. tv. to ruin something. Look at it! You munged it!
mung something up
tv. to mess something up. The team munged up the play, and the coach blasted them but good.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.