Trivial; overused
I believe the answer is:
trite
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">trivial</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >'<span class="explanation-format__original">overused</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ ></span>
(Other definitions for trite that I've seen before include "Overfamiliar through overuse" , "(Of an idea) lacking in originality" , "all vigour is gone" , "Stock" , "used till novelty's worn off" .)