GROGGY

adj. unsteady, shaky, wobbly, weak-kneed, weak, staggering, stupefied, dazed, stunned, reeling, punch-drunk, numb, numbed, benumbed, faint, in a trance or stupor, muddled, addled, confused, bewildered, confounded, puzzled, baffled, befuddled, Colloq dopey, punchy, woozy, Brit muzzy I was still groggy from the blow on the head