“Fill an automobile tank … or boost the confidence of, in slang” crossword clue

Reveal the answer to see why it works and where this clue has appeared before.GASUP is the answer to the New York Times crossword clue “Fill an automobile tank … or boost the confidence of, in slang”. It was last seen in the puzzle of February 18, 2026, where it runs at 25 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.