noun

the quality of being clever; intelligence or shrewdness.

people marvelled at his cleverness

intelligence,brilliance,genius,intellect,precocity,precociousness,talent,ability,capability,competence,proficiency,education,learnedness,erudition,bookishness,knowledgeableness,sagacity,wisdom,braininess,brains,smarts,shrewdness,astuteness,sharp-wittedness,quick-wittedness,acuteness,acuity,ingenuity,ingeniousness,resourcefulness,canniness,cunning,craftiness,artfulness,wiliness