1. extremely disgusting,
2. a shortened version of sick and nasty
1. That sandwich is sick nast. Its been in your fridge for 5 months!
2. Jared told a porn joke, sick nast!! He's such a perv!
by mibackibenzibie February 08, 2008
7 Words related to sick nast
Top Definition
over-the-top disgusting,
Did you see that sicknast girl just walk by?
by Critty Gee August 30, 2010
an adjective to describe something awesome
Geoff O'Callaghan is the sick nast
by Geoff February 22, 2004

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.