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Related to cacked: crackle, cracked heels
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1. noun, slang Trash, rubbish, or waste. I want to do a big cleanup of the house and get rid of all the cack we don't use anymore.
2. noun, slang Excrement. A: "Ew, what's that smell?" B: "I think someone's got cack on their shoes."
3. noun, slang Gunk, goop, or crud. Yuck, I'm not smearing that cack on my skin! The plumber discovered that a layer of foul-smelling cack had started forming around the inner walls of the pipes.
4. noun, slang By extension, that which is useless, baseless, or worthless. Ah, that's just a bunch of old cack. Don't believe a word of it! This used to be a reputable website for news about science, but now it's just full of clickbait cack.
5. verb, slang To defecate. I nearly cacked my pants from fright!
6. verb, slang To kill (someone). I heard the mob cacked him for talking to the police.

cack up

1. rude slang To cover or fill something with goop or gunk. In this usage, a noun or pronoun can be used between "cack" and "up." ("Cack" is a slang term for feces, used figuratively here.) You're going to cack up the engine if you don't get your oil changed more regularly.
2. rude slang By extension, to cause something to malfunction or work poorly. Usually used in passive constructions. I tried using a program to clean up and optimize my computer, but it's still cacked up.
3. rude slang To ruin, bungle, or make a mess of something. In this usage, a noun or pronoun can be used between "cack" and "up." The government really cacked up the new online system for filing tax returns. He didn't study for the test at all, so it's no surprise that he cacked it up.
See also: cack, up
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.


1. n. dung; feces. (see also caca.) Wipe that cack off your shoes before you come in here!
2. in. to defecate. (Usually objectionable.) The dog cacked right there on Fifth Avenue.
3. and kack and kak in. to empty one’s stomach; to puke; to vomit. (Onomatopeotic.) I cacked all night with the flu.
4. and kack and kak tv. to kill someone. Frank threatened to cack Veronica if she didn’t straighten up.
5. tv. to deceive someone; to shit (sense 7) someone. That didn’t happen! You’re just cacking me.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
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