To describe someone or something as rancideous is to say that they are the absolute epitome of being ugly or unpleasant.
That person over there is so completeley rancideous that if I have to continue looking at him, my eyes are going to explode and my head will catch fire.

This meal is rancideous. I hate it. You have insulted me by asking me to eat it. I wish you would die.
by beingmrkenny April 28, 2006
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a word that describes something that is disgusting.
Fran: Oh gross, did u fart?
Jim: Yeah.
Fran: Thats so rancid.
Jim: Yeah.
................
Harriet: Get those shoes out of my room!
Mark: Why?
Harriet: Look at them! They're rancid!
by b3c September 12, 2005
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A form of rancid flatulence that makes you want to rip out your anus.
I have got reet bad rancides, I am going to rip out my anus.
by Bez April 4, 2003
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Best punkrock band ever period.
some guy : why is rancid the best punkrock band in the world ?

me : just go listen to ...and out come the wolves
by Barmin May 25, 2006
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Wicked punk rock band with an amazing sound. Featuring Modern Punk Rock Legend Lars Frederikson. Authors of such songs as: Ruby Soho, Time Bomb.
Destination, U-u-unkown... Ruby Ruby, Ruby Ruby Soho
by Matt The Dude April 4, 2003
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One of the greatest punk bands of all time. The band consists of Tim Armstrong and Matt Freeman from OPIV, Lars Fredericksen (who later formed Lars Fredericksen and the Bastards) and Brett Reid.
by Skankin' Cucumber September 11, 2005
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But yet the best band ever, sings the greatest songs which include - Radio
by Anonymous February 3, 2003
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