Environment-friendly (5)
I believe the answer is:
green
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">environment-friendly</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for green that I've seen before include "The colour of immaturity" , "Environmental - colour" , "Politician; fresh" , "driver may go on it" , "Environmentally sound" .)