a guy whos a bit of a geek and likes to think he's cool. Can often try too hard and is afraid of people knowing them as a real person.
God, that guys a deano. Can he not tell she doesn't like him
by Someone you'll never find July 20, 2009

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Top Definition
a complete and total badass
"That guy is a total deano."
by ImperfectAngel April 02, 2008

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The sweetest guy in the world. He is always there for you, night or day. Has the biggest heart. Has great hair and amazing eyes. He is the kind of guy who doesn't give himself too much credit for being cool, but he is super cool dude! He is good looking, cute. He is the kinda guy you wanna squeeze and never let go cause he's just that awesome. He is very caring and thoughtful. They make you want to be a better person. Very intelligent and honest. Seriously, everyone wants a Deano!
Girl 1: Fu*k Off

Girl 2: What?

Girl 1: That girl over there has a Deano! Wtf.. I want one!

Girl 1: Damn Girl, he is such a Deano

*Star gazed eyes as they both stare and wish they had a Deano*
by Kissy444 July 28, 2012

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A festering ass pimple.
There's nothing more disgusting than looking at an ass and seeing a deano!
by Hairy Steven July 21, 2011

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Uncool, not fun to be around, a bore, and generally a tad smelly.
We were all having a good time until deano showed up
by Not your spam June 16, 2011

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The art of telling a lie - a rather obscure or complex fib when you tell someone one thing and then deny it monents later.
"That guy just told me he was engaged, then moments later said he was single - he was pulling a Deano"
by holr517 October 13, 2013

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Deano - a form of urban slander that's often applied to emo men in their late 20's who never grew out of their teenage emotional turmoil (both pre and post pubescent). A Deano would still wear ''trendy'' and ''alternative'' clothing such as skinny trousers, tacky and cheap baseball caps turned backwards that have jumped straight out of the early '90's, trashy tops that were brought in a charity shop or at least a store that caters to people who are experiencing financial difficulties.
Care Worker: Hey, buddy! Did you hear the news? That coworker Baroczky has been fired!
Colleague: Really? Why, what happened?
Care Worker: Apparently he took a disabled man to London, left him in a random pub and then scuttled off to a singing audition for that TV show, The Voice, somewhere else in the city!
Colleague: For real? Man, what a Deano!
by Coco-Rombus February 26, 2017

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