Earth-friendly prefix WSJ Crossword Clue
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The most common and recent 3-letter answer for "Earth-friendly prefix" is ECO.
The clue 'Earth-friendly prefix' refers to a common prefix used in words related to environmental friendliness, such as 'ecology' or 'eco-friendly.' 'ECO' is a prefix that denotes an ecological or environmental aspect.
This clue was last seen in the WSJ Crossword on January 12, 2026.
ECO is a prefix denoting ecological or environmental concern.
Green, Prefix with label, “Il Nome Della Rosa” writer, "Foucault's Pendulum" author, ___-friendly (environmentally conscious)
The clue “Earth-friendly prefix” is a classic crossword staple, frequently appearing in puzzles like the WSJ crossword. For the puzzle dated January 12 2026, the definitive 3-letter answer is: ECO.
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