Meaning of “almighty” - Learner’s Dictionary

almighty

adjective uk us /ɔːlˈmaɪti/
STRONG [ always before noun ]

very strong or forceful:

All of a sudden I heard an almighty bang in the kitchen.
POWERFUL

having the power to do everything, like a god:

Almighty God

(Definition of “almighty” from the Cambridge Learner’s Dictionary © Cambridge University Press)