Antonyms of adj clearheaded

1 sense of clearheaded

Sense 1
clearheaded (vs. confused), clear-thinking -- (not mentally confused; able to think clearly and act intelligently)

confused (vs. clearheaded) -- (mentally confused; unable to think with clarity or act intelligently; "the flood of questions left her bewildered and confused")
        => addlebrained, addlepated, puddingheaded, muddleheaded -- (stupid and confused; "blathering like the addlepated nincompoop that you are"; "a confused puddingheaded, muddleheaded fellow"- Isaac Sterne)
        => addled, befuddled, muddled, muzzy, woolly, wooly, woolly-headed, wooly-minded -- (confused and vague; used especially of thinking; "muddleheaded ideas"; "your addled little brain"; "woolly thinking"; "woolly-headed ideas")
        => befogged, befuddled -- (stupefied by alcoholic drink; "the wino's poor befuddled mind"; "a mind befogged with drink")
        => clouded -- (mentally disordered; "a mind clouded by sorrow")
        => dazed, stunned, stupefied, stupid (predicate) -- (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")
        => dazzled -- (stupefied or dizzied by something overpowering; "I fall back dazzled at beholding myself all rosy red, / At having, I myself, caused the sun to rise."- `Chanticler' by Rostand)
        => trancelike -- (as if in a trance)
        => punch-drunk, silly, slaphappy -- (dazed from or as if from repeated blows; "knocked silly by the impact"; "slaphappy with exhaustion")
        => spaced-out -- (confused or disoriented as if intoxicated through taking a drug)

Similarity of adj clearheaded

1 sense of clearheaded

Sense 1
clearheaded (vs. confused), clear-thinking -- (not mentally confused; able to think clearly and act intelligently)
       => clear -- (free from confusion or doubt; "a complex problem requiring a clear head"; "not clear about what is expected of us")
       => unclouded -- (not mentally disordered; "an unclouded mind")