Hackneyed phrase (6)
I believe the answer is:
cliche
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">hackneyed phrase</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 cliche that I've seen before include "Saying made tedious through over-use" , "Stereotyped expression" , "Commonplace remark, banality" , "Hackneyed idea, plot etc" , "Saying repeated too often" .)