Something which is bad, vile, or revolting. Plural - Swirthing; the act of doing something bad to someone, or ruining their plans.
Swirth - "Dude, look at that punk girl over there, she's so swirth!" Swirthing - "Sorry I can't come over today, my mom is totally swirthing me."
by Gorey O' Rotten July 28, 2010
An adjective that describes something grotesque.
The old crack house was rather swirthy.
by Gordgrinder July 21, 2010