Low-key (7)
I believe the answer is:
subdued
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">low-key</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for subdued that I've seen before include "Put down" , "Chastened" , "'Quieted, cowed (7)'" , "Overpowered" , "'Restrained, low-key (7)'" .)