niftyEnglishOxford American Thesaurusnifty adjective informal 1 the film has some nifty lenswork: skillful, capable, agile. ▷antonyms clumsy. 2 the wallpaper trimming wheel is a nifty little gadget: useful, effective, practical. 3 a nifty Kevlar tracksuit: fashionable, stylish, smart.