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1.
1. The most disgusting of disgusting.
Boy: Did you see that girls new haircut?
Girl: Yeah, completely nastifying!
by gerardarthurwayy<333 November 12, 2009
 
2.
orig. Skylerish (adj.)
1. To be nasty!
Forms: To be nastifying, to nastify, to have nastified, to have been nastified, he/she nastifies, I/you/we/they nastify, I/you/we/they will nastify
Synonyms: Nasty, Gross, Disgusting
(Someone does something gross)
Oh my gosh, that is like, so nastifying!
Like, why do you always have to nastify this place up?
by liveloveme4eversky January 18, 2014