Obvious remark (9)
I believe the answer is:
platitude
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">obvious remark</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for platitude that I've seen before include "We've heard that before" , "Trite remark made as if meaningful" , "Trite saying" , "that's nothing new" , "Licence" .)