| savvy(adjective, understanding, cool, sensible, alert) |
| sentient(adjective, understanding, knowledge, keen, sensible) |
| sharp(adjective, understanding, alert, familiar, wise) |
| streetwise(adjective, cool, refined, practical, mature) |
| switched on(expression, adjective, cool, familiar, refined) |
| tuned in(expression, adjective, understanding, cool, sensible) |
| up on(expression, adjective, cool, sensible, alert) |
| wise(adjective, understanding, knowledge, alert, familiar) |
| wised up(expression, adjective, alert, familiar, wise) |
| with it(expression, adjective, understanding, cool, keen) |
| able to recognize(expression, adjective, idiom, understanding, keen) |
| adult(adjective, cool, refined, practical, mature) |
| aesthetic(adjective, understanding, keen, sensible, certain) |
| apperceptive(adjective, understanding, keen, sensible, certain) |
| appraised(adjective, alert, familiar, wise, knowledgeable) |
| appreciative of |
| artificial(adjective, cool, refined, practical, cultured) |
| assured(adjective, understanding, keen, sensible, certain) |
| awake to |
| be up on(adjective, careful, knowledgeable, cautious, aware) |