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3.
An adjitive meaning something is cool.
UrbanDictionary.com is super niffty.
by Nimrod1 February 05, 2006
 
1.
1. somehting wicked awesome

2. a tool of some sort that helps in a cool way
1. Whooah that trick he did was niffty.

2. This is easy now cause I have this niffty little tool thingy.
by Andy Orem December 21, 2006
 
2.
an agjective meaning:
wicked awesome in everyway,
delightful,
the shit,
fuckin radd,
hot,
sweet,
or the oppisite,sarcastic meaning,
boring in the extreme,
sad,
degrading,
fucked up.
brett childress:"holy shit!that jeri allison girl is so niffty."
by jeri allison April 08, 2009