Meaning
Good, smart; useful or beneficial, often in an impressively clever way.
Etymology
Origin: Unknown
From *nift + -y. First element is of unknown origin. Possibly theatrical slang, as a shortened, altered form of Magnificat. Alternatively, perhaps a special use of US regional niffed (“put off, peeved”).
Synonyms & Antonyms
NYT Puzzle Appearances
Accepted in 4 recorded puzzles: