Dual (7)
I believe the answer is:
twofold
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">dual</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for twofold that I've seen before include "Twice as much" , "Double" , "Twice as numerous" , "Having dual elements" , "doubled in size" .)