Apparently reasonable (9)
I believe the answer is:
plausible
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">apparently reasonable</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 plausible that I've seen before include "Make us pliable so as to be convincing" , "Credible" , "Specious" , "False but sounding true" , "likely" .)