1. 
[syn: autocratic, bossy, dominating, high-and-mighty, magisterial, peremptory]
The Collaborative International Dictionary of English v.0.48:
high-and-mighty \high-and-mighty\ a.
   conceited and arrogant; imperious.
   [PJC]
WordNet (r) 3.0 (2006):
high-and-mighty
    adj 1: offensively self-assured or given to exercising usually
           unwarranted power; "an autocratic person"; "autocratic
           behavior"; "a bossy way of ordering others around"; "a
           rather aggressive and dominating character"; "managed the
           employees in an aloof magisterial way"; "a swaggering
           peremptory manner" [syn: autocratic, bossy,
           dominating, high-and-mighty, magisterial,
           peremptory]