smart - dumb traffic sign on blue sky

smart dumb traffic sign blue sky intelligent clever bright sharp brilliant wise knowledgeable genius quick-witted astute brainy perceptive smartness shrewd ingenious educated intellectual savvy resourceful acute brainpower aptitude competent rational sharpness discerning gifted thoughtful cerebral alert judicious skillful logical proficient quick-thinking keen expert reasoning sensitive polished insightful know- observant intelligentness practical sagacious braininess ingeniousness well-informed