| impressible(adjective, understanding, keen, fine, sensible) |
| impressionable(adjective, understanding, open, keen, fine) |
| in the know(expression, adjective, idiom, cool, sensible) |
| in the picture(expression, idiom, sensible, alert, familiar) |
| judicious(adjective, understanding, cool, sound, reasonable) |
| living(adjective, animate, alive, awake, breathing) |
| meticulous(adjective, careful, thoughtful, cautious, planned) |
| nice |
| omniscient(familiar, informed, well-informed) |
| on the ball(expression, idiom, familiar, careful, aware) |
| on the beam(expression, idiom, sensible, alert, familiar) |
| on the job(expression, idiom, careful, aware, attentive) |
| on to(expression, adjective, understanding, cool, keen) |
| perspicacious(understanding, keen, sensitive, perceptive, intellectual) |
| plugged in(expression, adjective, cool, sensible, alert) |
| prepense(deliberate, careful, thoughtful, cautious, planned) |
| privy(adjective, familiar, wise, witting, aware) |
| projected(adjective, careful, thoughtful, cautious, planned) |
| quick(adjective, understanding, cool, keen, sharp) |
| reasoned(adjective, sound, sensible, rational, careful) |