Feeble, decadent (6)
I believe the answer is:
effete
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">feeble</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">decadent</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ ></span>
(Other definitions for effete that I've seen before include "Feeble, lacking vitality" , "Spent; degenerate" , "Ineffective, decadent" , "Affected, over-refined" , "Weak, effeminate" .)