stupefied

adjectives

as if struck dumb with astonishment and surprise
"a circle of policement stood dumbfounded by her denial of having seen the accident"; "the flabbergasted aldermen were speechless"; "was thunderstruck by the news of his promotion"
dumbfounded, dumbstricken, dumbstruck, dumfounded, flabbergasted, stupefied, thunderstruck
in a state of mental numbness especially as resulting from shock
"he had a dazed expression on his face"; "lay semiconscious, stunned (or stupefied) by the blow"; "was stupid from fatigue"
dazed, stunned, stupefied, stupid