Isk 

A typo of idk when they are too lazy to correct themselves

"Hey are we hanging out tonight?"
"Isk"

Isk by Manuel Luis Torallba Molion November 22, 2019

isk 

I should know

“hey did you hear Sarah got the clap”
“isk matthew gave it to her”

isk by #wuelord June 15, 2019

ISK 

In the MMO Eve Online: InterStellar Kredits, the in-game currency.

I ratted all day and made some dank ISK!

ISK by BitterVet June 21, 2019

isk 

Adjective - used to describe immense sadness that cannot be put into words

Person 1: "omg my mum just died"
Person 2: "aww man, isk"

isk by EmmaandZainareawesome November 11, 2014

isk 

online slang for "it's okay". typically used when forgiving someone

Girl: OMG I totally forgot that it's ur bday today!
Guy: isk thanks

isk by JeonJungKookFangirl June 26, 2018

isk 

An online slang term commonly found in instant messaging meaning "I Suck" but not in an orally sexual manner in a screw up kind of way. It is common among American High Schoolers in NYC.

I screwed up that god dam math test on geometric proof so mother f'ing bad, isk so freakin bad Rob.

isk by Kevin O'. March 27, 2005

Isk 

Something you say when you don't have anything else to say

'Hey bro do you like my shirt?"
"isk"

Isk by Espoiri May 31, 2019