on the sly

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 09, 2005

On the sly

To do something on the sly is doing something sneakily, like a ninja.

"Check it out, I stole this on the sly."
"I'm skiving off school, on the sly of course."

by Naevai April 03, 2009

Sly

To do something cunningly, preferably without any one seeing, apart from your best mate to prove you did it

"Hey Jo, see that girl there? Well we danced and she is now carrying my child!!!"
" Slllly!"

by Jizz muffin May 20, 2003

On Sly

Shorter, easier way of saying
'on the sly' meaning 'in secret' or 'not obviously'.

Usually pronounced like 'ont sly' by people from the north of england.

Chloe: aww look at you, you're well excited on sly!
Amy: I so am not!!

by cocacolaprincess21 August 07, 2007

no sly

abbreviation for "No, seriously"

I found the love of my life, no sly!

by holidayxvii April 19, 2008

sly

secretive, being very smooth or mischevious

Wow Kelly you are one sly dog

Did you see her jump that kid, she was so sly

by Estafuton February 28, 2009

Sly

so like when I'm imagining "sly" I just see a real slick looking dude just posted up against a suspicious building under a shadow.. zoom in and the fucker has a tooth pick in his mouth just so effortlessly sweet

that nigga think he so sly but he's white so...

by young wells master September 12, 2013