confused has 19 distinct synonyms spread across 4 of its 5 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. Its one recorded opposite is clearheaded.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
perplexed by many conflicting situations or statements; filled with bewilderment
“obviously bemused by his questions”
lacking orderly continuity
“a confused set of instructions”
having lost your bearings; confused as to time or place or personal identity
“I frequently find myself disoriented when I come up out of the subway”
thrown into a state of disarray or confusion
“troops fleeing in broken ranks”
mentally confused; unable to think with clarity or act intelligently
“the flood of questions left her bewildered and confused”
Synonyms, antonyms and the broader and narrower relations for confused come from Princeton University’s WordNet. Full sources and licences.