The Oxford Thesaurus An A-Z Dictionary of Synonyms - nifty adj.

1) smart, stylish, modish, chic, spruce: I borrowed a nifty outfit from Grandma for the flapper's costume ball. 2) healthy, in good form, spry, energetic, agile, quick: I'm not as nifty as I was in 1950. 3) excellent, neat, great, splendid, fine, clever, skilful, apt, suitable: Having a picnic was a nifty idea. That was as nifty a bit of bargaining as I 've ever seen. 4) satisfactory, satisfying, good, profitable, substantial, considerable: He made a nifty profit on the sale of his house in Chelsea.