This clue appeared in the NYT Crossword on Sunday, February 1, 2026 (39 Down). The answer is hidden below until you want it. Sunday puzzles are large (21 by 21) and themed, about as hard as a Wednesday or Thursday.
Answer length: 4 squares
First letter
L _ _ _
First and last letters
L _ _ S
Show the answer
About the answer
LYES as a word: Potassium or sodium hydroxide (caustic soda); An alkaline liquid made by leaching ashes (usually wood ashes).
LYES has been an answer 2 times in the NYT Crossword and Mini since February 1, 2026.
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