| scientific(adjective, familiar, knowledgeable, informed, experienced) |
| sentient(adjective, cool, significant, familiar, intelligent) |
| skilful |
| slick(adjective, cool, significant, intelligent, brilliant) |
| smart(adjective, cool, bright, sensible, significant) |
| solemn(knowledgeable, cultured, educated, erudite, enlightened) |
| solid(knowledgeable, cultured, educated, erudite, enlightened) |
| sophic(adjective, cool, sensible, significant, familiar) |
| studied(adjective, knowledgeable, cultured, educated, erudite) |
| studious(adjective, thoughtful, serious, knowledgeable, attentive) |
| talented |
| tasteful(familiar, knowledgeable, informed, experienced, cultured) |
| taught(sensible, familiar, intelligent, experienced, cultured) |
| tuned-in(significant, familiar, sophisticated, aware, informed) |
| understanding(smart, bright, sensible, familiar, intelligent) |
| up(adjective, familiar, knowledgeable, skilled, competent) |
| up-to-date(adjective, cool, familiar, refined, knowledgeable) |
| up on(expression, current, competent, aware, informed) |
| versant(adjective, familiar, knowledgeable, skilled, competent) |
| versed in(expression, familiar, informed, experienced, cultured) |