Accordant (10)
I believe the answer is:
consistent
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">accordant</span>' is the definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for consistent that I've seen before include "true to priniciples" , "in agreement" , "uniform" , "Unchanging in standard over time" , "compatible" .)