eco-warrior

noun

informal a person who zealously pursues environmentalist aims

Word Origin for eco-warrior

C20: from eco- + warrior
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012