___-friendly (green)

The answer

ECO

3 letters. See every clue for this answer on the ECO answer page.

Used 31 times across 15 distinct years; most recently in 2026. It appears in 14 publications in the xd corpus. Frequency and last-seen figures come from the xd crossword corpus only.

Other clues for ECO

Every other clue in this collection answered by ECO, most used first.

• Green prefix - used 431 times, most recently in 2026
• Author Umberto - used 184 times, most recently in 2026
• Earth-friendly prefix - used 181 times, most recently in 2026
• Environmental prefix - used 114 times, most recently in 2026
• "The Name of the Rose" author - used 77 times, most recently in 2025
• Prefix with friendly - used 72 times, most recently in 2025
• "Foucault's Pendulum" author - used 64 times, most recently in 2026
• Prefix with system - used 58 times, most recently in 2026
• Prefix with tourism - used 50 times, most recently in 2026
• System starter - used 49 times, most recently in 2025
• Environmentalist's prefix - used 34 times, most recently in 2025
• Writer Umberto - used 33 times, most recently in 2026
• Friendly introduction? - used 32 times, most recently in 2026
• Novelist Umberto - used 27 times, most recently in 2026
• "The Name of the Rose" author Umberto - used 27 times, most recently in 2025

Related clues

Clues in this collection of the same answer length that share a word with this clue, or match its answer pattern when no word is shared. Most used first.

• Gore and Green - ALS, used 55 times
• Green and Gore - ALS, used 36 times
• Gives the green light - OKS, used 35 times
• Green Day drummer ___ Cool - TRE, used 32 times
• Green around the gills - ILL, used 29 times
• "Friendly skies" co. - UAL, used 27 times

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