Absorbent (6)
I believe the answer is:
spongy
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">absorbent</span>' is the definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for spongy that I've seen before include "Porous, absorbent, soft" , "Absorbing" , "prepared to absorb" , "Easily squashed" .)