"outgreening" meaning in English

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          "ref": "1999, John Tierney, \"Martian chronicle; plans for manned exploration of planet Mars\", Reason (February 1, 1999), p. 24(9) Vol. 30 No. 9",
          "text": "It was a lovely moment, a developer outgreening environmentalists by nobly espousing the largest real estate project in history, and it illustrated why Mars is a no-lose proposition for libertarians."
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        "present participle and gerund of outgreen"
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          "text": "It was a lovely moment, a developer outgreening environmentalists by nobly espousing the largest real estate project in history, and it illustrated why Mars is a no-lose proposition for libertarians."
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