erudite (adj.) Look up erudite at Dictionary.com
early 15c., "learned, well-instructed," from Latin eruditus "learned, accomplished, well-informed," past participle of erudire "to educate, teach, instruct, polish," literally "to bring out of the rough," from assimilated form of ex "out" (see ex-) + rudis "unskilled, rough, unlearned" (see rude). Related: Eruditely.