Prudent, expedient (7)
I believe the answer is:
politic
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">prudent</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">expedient</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ ></span>
(Other definitions for politic that I've seen before include "Prudent, judicious" , "constitutional" , "Expedient" , "Advisable" , "Prudent and tactful" .)