1. Literally what it sounds like, but a more sarcastic version of itself. As a substitute for "cool", coolios can be used as a joke between friends or as a sarcastic response to something you don't really care all that much about.

2. An adjective, describing how cool and, in some cases, attractive someone else is. A gender-neutral word in this sense.
Example One:
John: Hey, I got the new game for my X-Box!
James: Coolios.

Example Two:
Abigail: Guess who I saw walking down the road today? It was Richard!
Amanda: Really?! He is SO coolios!
by coolios May 03, 2014

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A better way to say "Cool"
A funnier way to say "Cool"
"Hey what's up?"
"I'm at such a wild party! Hbu?"
"Coolios! I'm at my friends house."
"You and your friend come over to the party!"
"Coolios! See you in 20!"
by CoolGal February 03, 2013

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A way of saying 'cool' often used by annoying women. Usually used by an individual to make them seem more intersting than they actually are (often to people they have recently met).
Anna: Hi Jen, my friends a i are going to a night club on saturday if you're interested?

Jen: Coolio!

Anna: <shudder>
by pablohoney78 November 17, 2011

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Agreeing with someone and at the same time coveying the coolness of the idea/plan or situation. A cool alternative to alrite or ok.

pronounciation: koo-leo
Q:"wanna go get a drink?"

A:Coolio (ok, alrite)

person 1:how did ya like that ride?
person 2 : coolio (yeah was awesomeness)
by Vaar October 23, 2009

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it means something is really cool.you dont want to be dull & just use cool so u can spice it up a little & say coolio
"wow your jacket is so coolio!!"
"thanks girl"
by claire l bear December 13, 2008

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As a synonim of ¨cool¨ but making reference to the band Coolio.
Guy 1: ¨Hey, isn't it cool?¨

Guy 2: ¨coolio, man¨
by bibiap March 14, 2008

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Coolio is a word that originates from the word 'cool'. Many people use it as a substitute.
The people who use the word are trying to be unique and try to be different.
40 year old man : 'Woah, my action man is so coolio!'
by piano_226 February 27, 2007

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