Sly-
A word to describe a harsh or demeaning action
''Hey''

''Hi''

''I had sex with your moms nans mom last night, and her cums like talcum powder''

''SLY!''
by SurefirePig November 4, 2012
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To be on the sly, the active of sly. You can do something on the sly, maybe stealing something funny and legendary, like mine and Jimbo's road bollard. You could also have 'slying it'
"We took that bollard on the sly"
"Tonight we're slying it/on the sly"
"Come on lads, here we go, on the sly on the sly"
by Ybot December 9, 2005
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used by north western youths meaning something is shocking or nasty or behind someones back. Also it could be dishonest
1. You took that munch from his bag? That's pure sly. = You stole that luncheon meal from his hold all? That is not very nice.

2. You told her you had were going the dentists? That's well sly. = You told her you had a dentists appointment? That is very dishonest.
by Lord Seabrook June 8, 2006
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1. (adj.) A word used in select areas of northeastern parts of America that is used in place of "cool"

2. (adj.) A magical word sometimes used to describe a funny individual

3. (n.) A first cousin
"The jungle is such a sly place to be at night."

"That guy's animation was so sly."
by THE TEA IS ON December 3, 2009
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Someone that lies about someone to everybody.
He was slying about the whole class.
by Mattym719303 January 27, 2021
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A prefix for a gaming name, if you are in the clan sLy.
sLy|Cooper is the most 1337 person in Clan sLy.
by sLy|Cooper April 23, 2003
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