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Derivative of sin (crossword clue)

3 squares · NYT Crossword · October 24, 2025 · The answer stays hidden until you tap it

This clue appeared in the NYT Crossword on Friday, October 24, 2025 (16 Down). The answer is hidden below until you want it. Friday puzzles are themeless and hard, with clues that are vague on purpose.

Answer length: 3 squares

First letter

C _ _

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About the answer

COS as a word: (chiefly UK) Synonym of romaine lettuce, a long-leaved variety of lettuce; (informal, African-American Vernacular) Alternative form of coz, cousin. [(informal) cousin (usually as a term of address)].

COS has been an answer 2 times in the NYT Crossword and Mini since October 24, 2025.

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