lunatic Antonyms

able to think clearly well-advised wise tactical strategic steady sound sober shrewd sharp-witted sharp sensible sapient sane knowledgeable levelheaded down-to-earth awfully clever as sharp as a needle agile enough of sound mind well-founded well-balanced in one's right mind insightful enlightened compos mentis commonsensical all there akamai sagacious right-minded reasonable genius expedient discerning clever clear-headed circumspect canny calm brilliant bright brainy balanced astute healthy informed intelligent reasoned