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20.
Alternative spelling for the surname of Angela Pratt, Head of Sixth Form.
Guess what? Prat's just closed the CR again, because SOMEBODY MOVED A CHAIR!
by Bob Gurch March 03, 2005
 
1.
Basically someone whos a major idiot, or is delusional and dumb. Acts against logic and thinks hes self-righteous. AKA: Major dumbass.

Good example: Percy from HP and from 5th book
"You stupid prat!"
by Disnchanted November 23, 2003
 
2.
n. English term, primarily used in United Kingdom. The literal meaning is "bottom" or "rump"; aka backside, buttocks, sacrum, tail end. This lends itself to the slang meaning of "ass," or "clueless person of arrogant stupidity." It is not always directly translatable to American slang. For example, if you used the term "prat hat" in the U.K., you would likely be laughed out of town by the locals.
I can't believe what an overbearing idiot he is. What a prat!
by Insufferable Human Dictionary September 19, 2005
 
3.
a self-aggrandizing, pompous fuck. Someone who is full of themselves and, almost invariably, stupid as well. With a hint of 'deluded.'
"I'm getting really tired of listening to Vince brag about his conquests. What a prat."
by cyclopsca January 31, 2006
 
4.
Behaving stupidly, or looking stupid. A British slang word, similar to idiot.
Wearing a yellow bowtie made Bob look a right prat.
by Delpigeon July 24, 2005
 
5.
An English term for "ass", also used to descibe someone as stupid and arrogant.
"No, I lose all bets to the bookies. You can't change fighters at the last minute, so no, I don't have my fight do I, you fucking prat?"

-Alan Ford as "Brick Top" Polford in 'Snatch'
by VooDooXII August 23, 2006
 
6.
A prat is someone who would actually contribute to Urban Dictionary.
I am a prat.
by Michael911 September 26, 2010
 
7.
An overly pretentious person. Someone who is so obviously into themselves that others notice and they fail to realize it.
Seth MacFarlane (the creator of Family Guy) is a total prat.
by Knownaim­ June 10, 2009