Overly theatrical (10)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">overly theatrical</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for histrionic that I've seen before include "Overly theatrical" , "Of acting; dramatic" , "Melodramatic" .)
(Other definitions for operatic that I've seen before include "Irate cop (anag)" , "music drama" , "description of Lulu?" , "as in G&S?" , "Relating to musical drama" .)