“Cause of a sudden change in interest, informally?” crossword clue

Reveal the answer to see why it works and where this clue has appeared before.REFI is the answer to the New York Times crossword clue “Cause of a sudden change in interest, informally?”. It was last seen in the puzzle of September 16, 2026, where it runs at 10 Across and fills 4 squares. It crosses 4 other entries in that grid — those are listed below and are the quickest way to confirm the letters you already have.