Fruitful (7)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">fruitful</span>' is the definition.<br/ ><span class="explanation-format__explanation">(associated in meaning)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for fertile that I've seen before include "Fruitful" , "Rich in growth" , "Let rife (anag)" , "Highly productive" , "Fecund" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">fruitful</span>' is the definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for prolific that I've seen before include "Very fertile, productive" , "having many children" , "Intellectually productive" , "Producing much" , "Rich" .)