imperious (adj.)
- absolute
- absolutist
- absolutistic
- acute
- arbitrary
- aristocratic
- arrogant
- authoritarian
- authoritative
- autocratic
- binding
- bossy
- clamorous
- compelling
- compulsive
- compulsory
- constraining
- critical
- crucial
- crying
- despotic
- dictatorial
- domineering
- driving
- dynastic
- exigent
- feudal
- heavy-handed
- high-handed
- high-pressure
- imperative
- imperial
- insistent
- instant
- irresistible
- kinglike
- kingly
- lordly
- magisterial
- majestic
- mandatory
- masterful
- monarchal
- monarchic
- must
- necessary
- obligatory
- oppressive
- overbearing
- peremptory
- pivotal
- pressing
- princely
- purple
- queenlike
- queenly
- regal
- repressive
- required
- restraining
- royal
- severe
- sovereign
- strict
- stringent
- suppressive
- tyrannical
- tyrannous
- urgent
Imperious Caesar, dead and turn'd to clay,
Might stop a hole to keep the wind away.