wise

Synonyms: astute aware calculating careful clever cogitative contemplative crafty cunning discerning discreet educated enlightened erudite experienced foresighted grasping informed insightful intuitive judicious keen knowing knowledgeable perceptive perspicacious politic prudent rational reflective sagacious sage sane sapient scholarly sensible sensing sharp shrewd smart sophic sound tactful taught thoughtful understanding wary well-informed witty

Antonyms: foolish ignorant stupid unintelligent unreasonable unwise