having knowledge of, conscious of, something

knowledgeable

having, showing, great learning

well-educated, cultured

giving care and thought to something

attentive, aware

a kind of seafish, often large and dangerous; a person who cheats to get money

clever, intelligent

having or showing, judgement and common sense; likely to be correct or effective

clever, intelligent

having lost natural simplicity through education or because of experience from high social living; having the latest design, methods etc (and sometimes suggesting it is complicated or needs a lot of effort)

cosmopolitan, cultured

skilled or experienced in something

experienced, informed