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18.
pronounced nast eye or just nasty.

A filthy and unsanitary dwelling
You just go back to your nasty, don't come here and sit on my clean furniture. Brush your teeth too!
by Stretch from Chitown May 11, 2012
 
50.
Foul tasting student drink made of lager, cider and blackcurrant. See also, diesel
Brett drank 4 pints of Nasty through his nose but had to stop as his nose started bleeding.
by Nick May 21, 2004
 
51.
Girls who act pure, then turn skank, cheat on boyfriends and act like bitches!
Keri turned NASTY in a hurry, what a nasty bitch!
by Truth December 05, 2003
 
52.
verb, meaning to give, bring, ect.

i.e. Pass the cherios would be "nasty me the cherios"
"Thoby, nasty me the peanuts"
by Malcolm X Terminator August 30, 2008
 
53.
A discrete word gay people can use to replace the actual word "gay" which can be used in public and doesn't prick up the ears of people listening in.

Background.. Many years ago, a wealthy man in the channel islands once was most dischuffed at his son being "nasty", and to cut a long story short used the term "You're not going to one of those nasty bars are you?".. And so it stuck and distributed..
Oooh, do you think he's nasty?
Whats your id on nastydar?
by MrG July 18, 2004
 
54.
1. another way of saying nice ass
1. Damn!!! She nasty!!
by live4snow3 October 02, 2003
 
55.
1. disgusting
2. raw or tight
1. You got some nasty shit on your floor.
2. Yo, you see that dunk last night? That shit looked nasty didn't it?
by realnigga4life March 01, 2005
 
56.
all the ugly ho's out there
DAMN, she is soooooooo nasty!
by mish mish man June 22, 2003