Pliant, plastic (7)
I believe the answer is:
ductile
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">pliant</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >'<span class="explanation-format__original">plastic</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ ></span>
(Other definitions for ductile that I've seen before include "Easily led" , "(Of metal) able to be drawn out into wire" , "Able to be drawn out thinly" .)