all-powerful
adjective
[ ˌɔːlˈpaʊəfʊl ]
• having complete power.
• "an all-powerful dictator"
Similar:
omnipotent,
almighty,
supreme,
most high,
pre-eminent,
dictatorial,
despotic,
totalitarian,
autocratic,
autarchic,
anti-democratic,
invincible,
unconquerable,