Concise witty saying (7)
I believe the answer is:
epigram
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">concise witty saying</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 epigram that I've seen before include "Short, memorable saying" , "Concise witty remark" , "Sally perhaps" , "Bon mot" , "short satirical poem" .)