synonym to cool, rad, narly, sweet, awesome, ect.. Something to say when you're excited about something, but to cool to squeal and show emotions.
Girl 1: Check it out! Selena Gomez is preforming in Portland!
Girl 2: Coolio!
by yayayayacrazygirl January 24, 2013
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A VERY Gay way of saying the popular term "Cool"
Hey man, i'll meet you back at my place
'Ight, coolio
by o0gokuo0 August 5, 2005
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basically cool with an io on the end similar to gnarlio (originating from gnarly)
aaah coolio
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adj.
A lamer way to say cool.

n.
An event that is mild on the excitement scale.

*Never use it in a sarcastic way because it won't sound good. Awesome>Cool>Sick>Coolioes
A:I got a new book to read.
B: Coolioes.
Coolioes was used here because the event isn't very exciting.

A:I got a new game!
B:Cool!
Cool was used here because the event was exciting enough.

Using "coolioes" in a sarcastic way
A:I got a new yak!
B:Coooolioes.

This is why we don't use coolioes in a sarcastic way, because when you say it sarcastically it sounds like a fat bird.
by coolioes August 18, 2009
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a great mc, and mentor to uncle jesse.
Yo, man! You so coolio, dog, chump, yeah.
by anonymous March 31, 2003
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Hey, isn't that top so coolio?

Yeah, sounds coolio. syt!
by apollajade January 22, 2005
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1)to be cool or awesome. 2) the act of appreciation. 3) a term of endearment
Jill: i won the lottery!!
Anna: that's coolio
by heartpineapple6 April 30, 2009
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