This clue appeared in the NYT Crossword on Friday, December 19, 2025 (62 Across). The answer is hidden below until you want it. Friday puzzles are themeless and hard, with clues that are vague on purpose.
Answer length: 4 squares
First letter
K _ _ _
First and last letters
K _ _ O
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About the answer
KETO as a word: (organic chemistry) The carbonyl group of a ketone; Ellipsis of keto diet, abbreviation of ketogenic diet. [Synonym of ketogenic diet.].
KETO has been an answer 4 times in the NYT Crossword and Mini since December 19, 2025.
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