Excessive pride, arrogance (6)
I believe the answer is:
hubris
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">excessive pride</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">arrogance</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that hubris is a type of arrogance)</span><br/ ><br/ ></span>
(Other definitions for hubris that I've seen before include "Overreaching pride" , "having an extremely big head?" , "The pride that goeth before a fall" , "The pride that goes before a fall" , "Excessive pride" .)