Synonyms for Muddled (same or very similar meaning)
WordNet sense 1 (confused and vague; used especially of thinking):
befuddled, woolly, wooly, addled, muzzy, woolly-headed, wooly-mindedWordNet sense 2 (mentally confused; unable to think with clarity or act intelligently):
confusedFrom the ODE community, based on WordNetadd/edit