/ ɔːlˈmaɪti; NAmE / adjective
1.
( in prayers ) having complete power :
Almighty God, have mercy on us.
2.
[ only before noun ] ( informal ) very great or severe :
an almighty bang / crash / roar
3.
( taboo , offensive ) used in the expressions shown in the example, to express surprise or anger :
Christ / God Almighty! What the hell do you think you are doing?
4.
the Almighty noun [ sing. ] God
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WORD ORIGIN
Old English ælmihtig , composite of all and mighty .