nifty(redirected from niftiness)
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Very good, interesting, or smart. Said typically of things. This nifty little device helps you locate your keys if you can't remember where you put them. That's a nifty bike you've got there! Is it new?
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
1. mod. neat; smart. That is a pretty nifty car you have there.
2. n. a fifty-dollar bill. (From nifty-fifty.) He paid me with a nifty and a domino.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.