Genuine, spontaneous (7)
I believe the answer is:
natural
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">genuine</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >'<span class="explanation-format__original">spontaneous</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ ></span>
(Other definitions for natural that I've seen before include "Organic" , "Unaffected, normal in manner" , "Not man-made; off-white" , "Plain - lifelike" , "(In music) neither sharp nor flat" .)