'high-and-mighty' definitions:

Definition of 'high-and-mighty'

From: WordNet
adjective
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]

Definition of 'high-and-mighty'

From: GCIDE
  • high-and-mighty \high-and-mighty\ a. conceited and arrogant; imperious. [PJC]