retarded Antonyms

precocious arrogant person cagey au courant sophisticated refined rabbinic professorial pretty doctoral polyhistor philosophe philologue nimble mathematician librarian smarty pants armchair critic annoyingly clever person annoying know-it-all highly evolved all hat no cattle ahead of the times bookish person as sly as a fox as cunning as a fox as cunning as a cartload of monkeys as clever as a wagonload of monkeys as clever as a cartload of monkeys agile enough highly developed walking dictionary artful dodger know-all innovative ingenious aided ahead agile advocated advance advanced adroit adept acute acquainted accommodated accelerated academic able