loony Antonyms

highly educated wise valid stable sound sober smart sensible sapient sane sagacious ruminative right-minded well-advised levelheaded able to reason clearly able to think clearly awfully clever as sharp as a needle of sound mind well-founded well-balanced in one's right mind enlightened compos mentis commonsensical all there right reasonable erudite educated discerning coherent clever clear-headed canny brilliant bright brainy balanced astute genius good reasoned rationalist rational prudent normal lucid logician