From Longman Dictionary of Contemporary Englishniftynif‧ty /ˈnɪfti/ adjective informal USEFULsomething that is nifty is good because it is clever, skilful, or effective a nifty little gadget for squeezing oranges
Examples from the Corpus
nifty• It's a nifty computer game that teaches math skills.• He scooped up the heavy wet snow, digging hard, his mind ticking through the mechanics of a last nifty illusion.• In order to see the nifty new designs, users downloaded copies of Netscape Navigator by the millions.• a nifty pair of sandals• Or quicker still, send a couple of nifty passes upfield - and you soon learn where your team-mates are.• Still, I think I would have endured it to use those nifty pompons just once.• This when nifty postcards of the planet are available at every convenience store, tourism agency and souvenir shop.• Hit the Target: Gamble on this nifty subgame.• I find that the front-runner for the Labour leadership, after some nifty trade union footwork, is John Smith. 