high-and-mighty

from 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}]
    
from The Collaborative International Dictionary of English v.0.48
high-and-mighty \high-and-mighty\ a.
   conceited and arrogant; imperious.
   [PJC]
    

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