Prim, self-righteous (8)
I believe the answer is:
priggish
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">prim</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >'<span class="explanation-format__original">self-righteous</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for priggish that I've seen before include "Self-righteously superior" , "Strait-laced" , "smug" , "Sanctimonious" , "Self-righteously moralistic" .)