Spirited, lively (6)
I believe the answer is:
feisty
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">spirited</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ >'<span class="explanation-format__original">lively</span>' is the second definition.<br/ ><br/ ></span>
(Other definitions for feisty that I've seen before include "Plucky and spirited" , "Spiritedly aggressive" , "Spirited, exuberant" , "Agressive or excitable in American usage" , "Lively and quarrelsome" .)