| abreast(adjective, familiar, knowledgeable, skilled, aware) |
| acquainted(adjective, familiar, knowledgeable, skilled, aware) |
| alive(familiar, knowledgeable, skilled, experienced, up-to-date) |
| apprehensive(familiar, knowledgeable, skilled, experienced, up-to-date) |
| apprised(adjective, familiar, knowledgeable, witting, aware) |
| at home with(expression, adjective, idiom, familiar, knowledgeable) |
| au courant(expression, adjective, familiar, knowledgeable, skilled) |
| au fait(expression, adjective, familiar, knowledgeable, skilled) |
| aware(adjective, familiar, knowledgeable, skilled, witting) |
| cognizant(adjective, familiar, knowledgeable, skilled, witting) |
| comprehending(adjective, sympathetic, familiar, knowledgeable, skilled) |
| conscious(adjective, familiar, knowledgeable, skilled, witting) |
| conversant(adjective, sympathetic, familiar, knowledgeable, witting) |
| cool(adjective, familiar, knowledgeable, skilled, aware) |
| down with(expression, adjective, sympathetic, familiar, knowledgeable) |
| experienced(adjective, familiar, knowledgeable, skilled, aware) |
| familiar(adjective, knowledgeable, witting, aware, savvy) |
| familiar with(expression, adjective, familiar, knowledgeable, skilled) |
| grounded(adjective, familiar, knowledgeable, witting, aware) |
| hep(adjective, sympathetic, familiar, knowledgeable, skilled) |