This clue appeared in the NYT Crossword on Saturday, November 15, 2025 (18 Across). The answer is hidden below until you want it. Saturday puzzles are the hardest of the week and themeless, so clues are often deliberately misleading.
Answer length: 4 squares
First letter
O _ _ _
First and last letters
O _ _ O
Show the answer
About the answer
ONTO as a word: (mathematics, of a function) Attaining each of the values in its codomain; having its image equal to its codomain.
ONTO has been an answer 9 times in the NYT Crossword and Mini since November 2, 2025.
Other clues with the same answer
More clues from this puzzle
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- Assists after a breakdown (19 Across)
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- Racket (22 Across)
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