tyrannical (adj.)

• absolute
• absolutist
• absolutistic
• arbitrary
• aristocratic
• arrogant
• autarchic
• authoritarian
• authoritative
• autocratic
• bossy
• brutal
• despotic
• dictatorial
• domineering
• feudal
• harsh
• heavy-handed
• high-handed
• imperative
• imperial
• imperious
• lordly
• magisterial
• masterful
• oppressive
• overbearing
• peremptory
• repressive
• roughshod
• severe
• strict
• suppressive
• tyrannous
• unjust