Affectedly proper, prudish (6)
I believe the answer is:
prissy
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">affectedly proper</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >'<span class="explanation-format__original">prudish</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ ></span>
(Other definitions for prissy that I've seen before include "Overly prim and proper" , "Fussily respectable" , "'Priggish, prudish (6)'" , "Prim and prudish" , "Disliking what is rough or improper" .)