Grandiloquent (7)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">grandiloquent</span>' is the definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for orotund that I've seen before include "Loud or pompous" , "Sonorous; pompous" , "Of speech, dignified and pompous" , "Full, clear and musical" , "Pompous (in style)" .)
(Other definitions for epic that I've seen before include "long poem telling of heroic deeds" , "Larger than life" , "Long story telling of a hero's deeds" , "Long, heroic story" , "On a grand scale like long poem" .)