Lively and active (4)
I believe the answer is:
spry
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">lively and active</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for spry that I've seen before include "Light on one's feet" , "Nimble, brisk" , "'Agile, nimble (4)'" , "Far from doddering" , "Quick and agile" .)