Watery or papery (4)
I believe the answer is:
thin
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">watery</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ >'<span class="explanation-format__original">papery</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ ></span>
(Other definitions for thin that I've seen before include "Skinny" , "With little thickness" , "Lean; make (plants) less crowded" , "Insubstantial" , "Lacking substance; not dense" .)