Having a pervading tone or mood (11)
I believe the answer is:
atmospheric
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">having a pervading tone or mood</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for atmospheric that I've seen before include "Relating to earth's air" , "Having a pervading feeling" , "Evoking feelings or emotions" , "conveying a certain air" , "Relating to gaseous zone" .)