adjective
- domineering in a haughty manner; dictatorial; overbearing: an imperious manner; an imperious person.
- urgent; imperative: imperious need.
adjective
- domineering; arrogant; overbearing
- rare urgent; imperative
1540s, from Latin imperiosus “commanding, mighty, powerful,” from imperium “empire, command” (see empire). Related: Imperiously.