Opulent, lavish (5)
I believe the answer is:
grand
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">opulent</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that opulent can be written as grand)</span><br/ ><br/ >'<span class="explanation-format__original">lavish</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ ></span>
(Other definitions for grand that I've seen before include "Exalted, magnificent" , "PS1k" , "Stately - splendid" , "A slangy PS1,000" , "Piano; thousand pounds" .)