- clearheaded, clear-thinking - not mentally confused; able to think clearly and act intelligently
Antonyms: confused, addlebrained, addlepated, potty, puddingheaded, muddleheaded, addled, muddled, muzzy, woolly, wooly, woolly-headed, wooly-minded, befogged, befuddled, clouded, dazed, stunned, stupefied, stupid, punch-drunk, silly, slaphappy, spaced-out, dazzled, trancelike