another way of saying 'cool' or 'kool'. an exclamation that somthing is quite good, or that you have approved it.
'im going to town to but a new pair of converse'
'koolio'
by pepperoni September 05, 2003

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Top Definition
the new "hippest" way to say cool(*lol), expecially when instant messaging!
IM Conversation:
monkeezrok: I got a new Guitar!!!
tammlala: Koolio!!!
by Alyssa March 06, 2004

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A cool & silly dude.
Jack: i wish i didnt do my own stunts (in that moment Jack was caught in flames)

Jack: So thats what I did for my weekend.

James: Koolio man haha
by JabbaLicks June 15, 2009

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A word greater than cool, so much so that it has been known that only the greatest, funny, surprisingly attractive and wise people use it
Girl: gotta go, cyaa
Boy: Oh Okay, cya!
Girl leaves
Boy: Wow, she's so Koolio!
by DJHarrington May 14, 2014

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Being considered cool is good.
being considered Kool is better
When you have reached the peak of koolness you are considered a "Kool-io"
Jimmy Nutron was the Kool-io of the town.
by RuralD May 11, 2016

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cool
BOB: i just had really bad ice cream

JIM: koolios
by vampressa123 November 03, 2010

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The Urban Dictionary T-Shirt

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It means Cool or awesome, but spelled better!! its also really fun to say!!! ^_^
Person: OMG i got these cute new shoes!
You: Koolio!!
by Ya-dun-need-2-kno February 13, 2009

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The Urban Dictionary Mug

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The Urban Dictionary Mug

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The Urban Dictionary Mug

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt