Foolish and irrelevant talk (7)
I believe the answer is:
blather
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">foolish and irrelevant talk</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 blather that I've seen before include "(Talk) gibberish" , "Foolish and irrelevant talk" , "Rubbishy old talk, foolish chat" , "Foolish chatter, just oul' talk" , "Long-winded talk making little sense" .)