| acquainted with |
| adept in |
| apprehensive(adjective, cool, sensible, alert, familiar) |
| apprised(adjective, alert, familiar, wise, knowledgeable) |
| at home with(expression, adjective, idiom, familiar, knowledgeable) |
| awake(adjective, cool, sensible, alert, familiar) |
| briefed(knowledgeable, aware, informed, learned, well-informed) |
| conscious(adjective, cool, sensible, alert, familiar) |
| educated(knowledgeable, conversant, well-versed) |
| expert(knowledgeable, aware, informed, learned, well-informed) |
| grounded(adjective, sensible, alert, familiar, wise) |
| hip(adjective, alert, familiar, wise, knowledgeable) |
| in the know(expression, adjective, idiom, cool, sharp) |
| in the picture(expression, adjective, idiom, sensible, alert) |
| instructed |
| know the score(expression, adjective, idiom, alert, familiar) |
| level |
| mindful(adjective, alert, familiar, wise, knowledgeable) |
| on the beam(expression, adjective, idiom, sensible, alert) |
| on to(expression, adjective, cool, sensible, alert) |