Well-read

(a.) Of extensive reading; deeply versed; -- often followed by in.

Thesaurus Entries

acquainted with, at home in, at home with, conversant with, familiar with, informed in, intimate with, master of, proficient in, strong in, up on, versed in, well-educated, well-grounded, well-informed, well-posted, well-read in, well-versed, widely read