imperious

/ɪmˈpɪriəs/
adjective
  1. Having or showing a proud, commanding, or overbearing manner; expecting obedience from others.
    • The manager's imperious tone made everyone in the meeting uncomfortable.
    • His imperious attitude annoyed his classmates, who felt he treated them like servants.
    • She gave an imperious wave of her hand, signaling that the discussion was over.