“Greek letter that refers to a lone wolf, in Gen-Z slang” crossword clue

Reveal the answer to see why it works and where this clue has appeared before.SIGMA is the answer to the New York Times crossword clue “Greek letter that refers to a lone wolf, in Gen-Z slang”. It was last seen in the puzzle of October 10, 2025, where it runs at 24 Down and fills 5 squares. It crosses 5 other entries in that grid — those are listed below and are the quickest way to confirm the letters you already have.