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Adjective - used to describe immense sadness that cannot be put into words
Person 1: "omg my mum just died"
Person 2: "aww man, isk"
by EmmaandZainareawesome November 11, 2014
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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.
by Kevin O'. March 27, 2005
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Those people in high school who were born to be bullied and people get joy out of bullying them. In order to create an isk, you must take one's first initial of their first or last name and add "isk". By creating isk you lower the individuals dignity basically flushing it down the toilet.
Ken Smith smells so bad and is easy to make fun of. We should call him kisk or sisk.
by Moob machine October 31, 2017
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