| in the know(expression, adjective, idiom, cool, familiar) |
| in vogue(expression, adjective, cool, familiar, groovy) |
| into(adjective, cool, refined, practical, mature) |
| jaded(adjective, refined, practical, mature, cultured) |
| jazzed(sharp, bright, lively, active, careful) |
| jet-set(adjective, refined, practical, mature, cultured) |
| knowing(cool, familiar, refined, practical, cultured) |
| laid-back(adjective, refined, practical, mature, cultured) |
| lively(sharp, bright, active, attentive) |
| mature(adjective, refined, practical, cultured, classy) |
| mod(adjective, cool, familiar, groovy, informed) |
| observant(cool, sharp, bright, lively, familiar) |
| on guard(expression, sharp, bright, lively, alert) |
| on the ball(expression, idiom, sharp, bright, lively) |
| on the job(expression, idiom, sharp, bright, lively) |
| on the lookout(expression, idiom, sharp, bright, lively) |
| on the qui vive(expression, idiom, sharp, bright, lively) |
| perceptive(cool, sharp, bright, lively, active) |
| plugged in(expression, adjective, cool, familiar, desirous) |
| practical(adjective, cool, smooth, refined, mature) |