| shrewd(sharp, smart, astute) |
| cool(adjective, smooth, smart, alert, familiar) |
| in the know(expression, adjective, idiom, sharp, smart) |
| into(adjective, smooth, smart, alert, familiar) |
| knowing(adjective, keen, sharp, smart, alert) |
| on the beam(expression, adjective, idiom, smart, alert) |
| on to(expression, adjective, alert, familiar, wise) |
| perceptive(adjective, keen, sharp, smart, alert) |
| plugged in(expression, adjective, alert, familiar, rational) |
| savvy(adjective, smooth, sharp, smart, alert) |
| sensible(adjective, keen, sharp, smart, alert) |
| sharp(adjective, smooth, keen, smart, alert) |
| smooth(adjective, keen, sharp, smart, intelligent) |
| streetwise(adjective, keen, sharp, smart, intelligent) |
| tuned in(expression, adjective, smooth, smart, alert) |
| up on(expression, adjective, sharp, smart, alert) |
| wise to(expression, adjective, alert, familiar, wise) |
| with it(expression, adjective, alert, familiar, wise) |
| able(adjective, smart, practical, expert, skilled) |
| accomplished(adjective, smart, practical, expert, skilled) |