Readily understood, clear (5)
I believe the answer is:
lucid
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">readily understood</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">clear</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ ></span>
(Other definitions for lucid that I've seen before include "Easily understood; sane" , "Able to think clearly" , "Limpid" , "Rational, clear" , "Clear, easily understood" .)