knowledgeable

Synonyms: abreast acquainted alert appreciative apprised au courant au fait brainy bright brilliant clever cognizant conscious conversant discerning erudite experienced familiar informed insightful intelligent in the know knowing learned lettered omniscient perceptive plugged in posted prescient privy quick-witted sagacious sage savvy scholarly sensible sharp smart sophic sophisticated tuned-in understanding versed well-informed well-rounded wise with-it

Antonyms: ignorant unaware uneducated uninformed