An unspecified amount (4)
I believe the answer is:
some
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">an unspecified amount</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for some that I've seen before include "A little; not a little" , "Several" , "Hard work" , "An unspecified quantity, not all" , "Part" .)