Legitimate, proper (6)
I believe the answer is:
kosher
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">legitimate</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >'<span class="explanation-format__original">proper</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for kosher that I've seen before include "Conforming to Jewish dietary law" , "Genuine and legitimate (informal)" , "Edible for Jew" , "Of food, conforming to requirements of Jewish law" , "Legitimate (according to Jewish law?)" .)