imperious

having or showing arrogant superiority to and disdain of those one views as unworthy

Children are imperious with each other before they learn that earning someone's respect is better than demanding.

She was again imperious, ran the dicussions like a martinet, bristled when one Smith student said she hadn't read the books, but had seen the MP movie.

Mrs. Prendergast looked across at Eva, her expression imperious.

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