Poise, self-possession (6)
I believe the answer is:
aplomb
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">poise</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >'<span class="explanation-format__original">self-possession</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ ></span>
(Other definitions for aplomb that I've seen before include "Cool self-confidence" , "Self-possession, assurance" , "Self-satisfied dignity and confidence" , "Self confidence" , "Dignified self-confidence" .)