adjective

(of a person) unable to think clearly; bewildered.

she was utterly confused about what had happened

demented,bewildered,muddled,addled,befuddled,disoriented,disorientated,(all) at sea,unbalanced,unhinged,senile,with Alzheimer’s disease,vague,unclear,indistinct,imprecise,blurred,nebulous,hazy,woolly,foggy,shadowy,dim,imperfect,sketchy,obscure,remote