More malleable or spongy (6)
I believe the answer is:
softer
(Other definitions for softer that I've seen before include "Less hard, more yielding" , "Less firm, loud" , "More pliable or malleable" , "Less hard, more malleable" .)
I believe the answer is:
softer
(Other definitions for softer that I've seen before include "Less hard, more yielding" , "Less firm, loud" , "More pliable or malleable" , "Less hard, more malleable" .)