Careful and sensible (7)
I believe the answer is:
prudent
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">careful and sensible</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for prudent that I've seen before include "With care/forethought" , "Careful, circumspect" , "Careful and sensible" , "Judicious" , "Cautious; discreet" .)