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4.
combination of rank and nasty, usually used in a sexual context
I'd love to tap that sweet honeyhole but Austin's been there before and he told me it smelled rasty.
by D Rock June 02, 2004
 
1.
Combination word formed from raunchy and nasty. Often used to describe scents, although it can be applied anywhere raunchy or nasty can. Developed from a need to express a sense worse than nasty, but that raunchy may be too riske for.
Dude, that stankweed smells absolutely rasty!
by Giant peach November 08, 2005
 
2.
Rasty is Nasty with an "R". It means course, crude and unpleasant.
Bob's friends were a rasty bunch of bigots.
by Woda June 09, 2005
 
3.
The act of doing uncommon sometimes nasty acts that may or may not be justified.
"That party last night got real rasty!" "Kyle got real rasty last night when he drank that chew spit for $100." "Andrew's new name is now 'King Rast' because of all the rasty shit he does."
by THE_NEO January 29, 2012
 
5.
Rasty comes from the word ratchet and nasty put together.
That thot is rasty...
by lean bean September 13, 2014