| conversant(adjective, understanding, keen, sensible, certain) |
| current(adjective, present, smart, new, common) |
| dashing(adjective, smart, new, hot, elegant) |
| experienced(adjective, keen, smart, intelligent, refined) |
| faddy(adjective, smart, rage, new, common) |
| go-go(adjective, alert, familiar, wise, knowledgeable) |
| grounded(adjective, sensible, alert, familiar, wise) |
| heedful(sharp, bright, lively, alert, familiar) |
| hep(smart, skilled, shrewd, clever, polished) |
| in fashion(expression, adjective, cool, present, new) |
| in the know(expression, adjective, idiom, cool, sensible) |
| in the picture(expression, idiom, sensible, alert, familiar) |
| in vogue(expression, adjective, cool, present, smart) |
| mindful(adjective, understanding, keen, sensible, certain) |
| mod(adjective, cool, present, smart, rage) |
| new(adjective, present, smart, common, hot) |
| newfangled(adjective, present, smart, new, hot) |
| on the ball(expression, adjective, idiom, adverb, sharp) |
| on to(expression, adjective, understanding, cool, keen) |
| plugged in(expression, adjective, cool, sensible, alert) |