Accessible; frank (4)
I believe the answer is:
open
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">accessible</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(something open can be accessed)</span><br/ ><br/ >'<span class="explanation-format__original">frank</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ ></span>
(Other definitions for open that I've seen before include "Accessible - candid" , "Not closed or obstructed" , "Undo; ajar" , "Traditional room heater" , "gaping" .)