環かん境きょう保ほ護ご論ろん者しゃMeaningsNoun1. environmentalistKanji used環loop境border保preserve護keep safe論argument者someoneComposed of環かん境きょう保ほ護ごenvironmental protectionNoun論ろん者しゃadvocate; disputant; debater; (present) writer; authorNoun