Dilute (4)
I believe the answer is:
thin
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">dilute</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that dilute can be written as thin)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for thin that I've seen before include "Sparse; not dense" , "as 7 [LOAF] may be sliced" , "Dilute; lean" , "Superficial" , "Lean; make (plants) less crowded" .)