Slight objection (7)
I believe the answer is:
quibble
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">slight objection</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 quibble that I've seen before include "Trivia complaint" , "Petty complaint" , "Make petty objections" , "Trivial objection" , "Carp" .)