Truthful, frank (6)

I believe the answer is:
candid
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">truthful</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">frank</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that frank can be written as candid)</span><br/ ><br/ ></span>
(Other definitions for candid that I've seen before include "Frank, forthright" , "Frank and outspoken" , "Forthrightly sincere" , "Impartial" , "Honest and open about what one thinks" .)