Hypocritical (13)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">hypocritical</span>' is the definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for sanctimonious that I've seen before include "Canting" , "Making show of being morally superior" , "Ostentatiously pious" , "Affecting piety" , "Hypocritically moral" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">hypocritical</span>' is the definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for insincere that I've seen before include "fake" , "Hollow" , "Dishonest" , "Dissembling" , "Not genuine, hypocritical" .)