Search Result for "arrogator": 
Wordnet 3.0

NOUN (1)

1. a person who through conceit makes pretentious claims to rights or advantages that he or she is not entitled to or to qualities that he or she does not possess; 



WordNet (r) 3.0 (2006):

arrogator
    n 1: a person who through conceit makes pretentious claims to
         rights or advantages that he or she is not entitled to or
         to qualities that he or she does not possess