imbecile Antonyms

fast learner djinn djinni high hat mastermind rocket scientist knowledgeable boffin nimble-fingered bright blue autodidactic sentiency sharp sharp-witted smart talented wizard maven einstein boy wonder brainiac whip-smart spellbinder walking encyclopedia wise person as sharp as a needle able to think quickly extremely clever mentally acute clever clogs bright spark magus man of letters mensa parvenue brains egghead smarty pants brainbox self-taught sagacious resourceful casuist clever conceiver diplomatist educated encephalon expert explicator