Nothing more (4)
I believe the answer is:
mere
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">nothing more</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 mere that I've seen before include "Nothing more than a small pond" , "Insignificant" , "DDwater" , "President Hollande's mother?" , "Lake (and nothing else?)" .)