1) Originally, “dude” meant a stuck up person who dressed overly well. It first emerged in the year 1883 in England.

2) Later it was used in the old west to mean a city person who moved to the west without actually know what he was doing. Synonymous with “city-slicker

3) Later, in California, the term changed from these insults to a term meaning any male, human or otherwise. Sometimes it is used in reference to tom-girls. Now, it is often used for emphasis as well.
“Look at that rich fellow; what a dude! Do you see the feather in his hat?”

“What’s that dude doing in these parts? I bet he can't even ride a horse!”

“Hey dude, I missed you at the movies the other day!”

“Dude, that's harsh.”
by Dezi July 10, 2005
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1) The Universal Prounoun
2) Adj - expression of emphasis, amazement, or awe
by Shaggy June 1, 2003
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the vibe I’m giving off now, calling everyone dude and stuff.
me: dude dude hey dude!!!!!
by hhstar moonlight May 16, 2020
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The person that everyone is trying to be like or looking up to. He influences the crowd and girls love him.
Person 1: How do you know she's gonna fall for you?

Person 2: Because I'm that dude.
by Dougie R January 9, 2006
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That one guy or girl in your group of friends who is either a klutz or just does things others don't. You can always rely on him/her to say the wrong thing at the worst moment and its funny as hell. Things tend to happen to this person that are so ridiculous and funny they would only happen to him/her and no one else on the planet. The way this person carries him/herself, the things he does, says or the actions he/she takes are so funny and meme-able that social media pages will begin to pop up, dedicated to meme and or play off of this person by posting outrageous and/or controversial things that this person would say or do. These "alternate" profiles will eventually lead to much more enjoyable and crazy content than the original friend could conjure up on his/her own.
Sitting on a crowded train:

Brosef: He braj have you ever gotten into a fist fight?

Braj: I don't know brosef, have you?

Dude: (Very Loud) Why wont you guys stop talking about fisting?

Brosef/Braj: DUDE!?!?! lololol
by Jewsef January 13, 2015
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When one makes plans to meet up with (or go out with) a female and she shows up with a guy.
We drove down there to meet up with Ashley and got duded. What a dirty ho.
by Sooner Hater October 5, 2009
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1) a commonly used word used for multiple emotions, such as: happiness, shock, disappointment.

2) another word used to address your friends.
1) Dude! I just found a stack of $300 in my dresser!
2) Yo, what's up dude?
by pablo! December 8, 2010
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