Definition of "ungreen" [ungreen]

• Environmentally unfriendly. Harmful to or inconsiderate of the environment. (adjective)

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• "I have been to some "ungreen" green-certified hotels."
• "I am genuinely unclear as to exactly how 'ungreen' flying is?"
• "GreenCells customers deter these devices from landfills and prevent them from being mined for metals in a very "ungreen" way."