informed
knowing
knowledgeable
learned
lettered
literate
self-educated
semiliterate
well-educated
well-read
abreast of
abstruse
advanced
ameliorated
au courant
autodidactic
beautified
bettered
briefed
civilized
converted
critical
cultivated
cultured
deep
developed
discerning
embellished
encyclopedic
enhanced
enlightened
enriched
erudite
improved
instructed
literary
pansophic
perfected
polished
polyhistoric
polymath
polymathic
posted
primed
profound
refined
reformed
scholarly
scholastic
schooled
self-instructed
uneducated