| disillusioned(adjective, cool, refined, practical, mature) |
| down pat(expression, adjective, silent, assumed, implicit) |
| down with(expression, adjective, sensible, knowledgeable, witting) |
| enlightened(adjective, alert, familiar, wise, knowledgeable) |
| experienced(adjective, refined, practical, mature, cultured) |
| felt(adjective, understanding, keen, sensible, certain) |
| go-go(adjective, alert, familiar, wise, knowledgeable) |
| groovy(adjective, cool, alert, familiar, wise) |
| hep |
| hip(adjective, knowledge, alert, familiar, wise) |
| hip to(expression, adjective, cool, sensible, familiar) |
| in right mind(expression, adjective, idiom, understanding, keen) |
| in the secret(expression, idiom) |
| in to(expression, adjective, preposition, familiar, wise) |
| informed about |
| jaded(adjective, refined, practical, cultured, urbane) |
| jet-set(adjective, cool, refined, practical, mature) |
| judicious(adjective, understanding, sensible, knowledgeable, perceptive) |
| keen(adjective, understanding, sensible, certain, alert) |
| know-how(adjective, alert, familiar, wise, knowledgeable) |