In accordance with reason (7)
I believe the answer is:
logical
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">in accordance with reason</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for logical that I've seen before include "Deducible" , "Clearly and soundly reasoned" , "entirely reasonable" , "Deductive" , "Objective" .)