dazed

adjectives

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

stunned or confused and slow to react (as from blows or drunkenness or exhaustion)

dazed, foggy, groggy, logy, stuporous