| popular(adjective, smart, rage, new, common) |
| practiced(adjective, keen, smart, intelligent, refined) |
| really into(expression, adjective, desirous, exultant, horny) |
| sensible(adjective, understanding, keen, appropriate, certain) |
| sentient(adjective, understanding, keen, sensible, certain) |
| sharp(adjective, understanding, keen, smart, bright) |
| smart(adjective, keen, bright, new, hot) |
| swinging(new, common, accepted, dominant, widespread) |
| switched on(expression, adjective, cool, sharp, bright) |
| tony(adjective, fashionable) |
| tuned in(expression, adjective, understanding, cool, sensible) |
| up(adjective, present, new, hot, familiar) |
| up-to-date(adjective, present, appropriate, smart, sensible) |
| up-to-the-minute(adjective, present, appropriate, smart, sensible) |
| versed(adjective, cool, sensible, familiar, knowledgeable) |
| vigilant(adjective, understanding, keen, sharp, bright) |
| watchful(adjective, understanding, keen, sharp, smart) |
| wise(adjective, understanding, sharp, smart, bright) |
| wise to(expression, adjective, understanding, cool, keen) |
| wised up(expression, alert, familiar, wise, refined) |