Definition of Imperious: Imperious (adjective): Assuming power or authority without justification; arrogant and domineering. Synonyms: commanding, domineering, overbearing, authoritarian Antonyms: humble, meek, submissive, passive Memory Tip: Think of “imperious” as someone who acts like an emperor, giving orders and expecting everyone to obey, even when they have no right to do so. Conversation and Short…