Caustic stuff WSJ Crossword Clue
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The most common and recent 3-letter answer for "Caustic stuff" is LYE.
The clue 'Caustic stuff' refers to a substance that is highly corrosive or capable of burning. 'Lye' is a common term for sodium hydroxide or potassium hydroxide, both of which are strong alkaline substances used in cleaning and soap making.
This clue was last seen in the WSJ Crossword on November 06, 2025.
Lye is a strongly alkaline substance used in cleaning and making soap.
Aid in making soap, Cleaning substance with a dishonest-sounding name, Basic soapmaking ingredient, Caustic paint stripper, Caustic cleaner
The clue “Caustic stuff” is a classic crossword staple, frequently appearing in puzzles like the WSJ crossword. For the puzzle dated November 6 2025, the definitive 3-letter answer is: LYE.
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