erudite

having or showing profound knowledge

Characterized by extensive reading or knowledge; well instructed; learned.

Latin eruditus, past participle of erudire, to instruct thoroughly

“Whether or not his character stood well with a man of the world, his force of character, backed by solid attainments in addition to brilliant gifts, could win a reputable citizen and erudite to support him.”

— George Meredith, Complete Project Gutenberg Works of George Meredith

“This point of view makes linguistics very hard and very erudite, so that anyone who actually does discover facts about underlying "competence" is entitled to considerable kudos.”