| intimate |
| introduced(adjective, familiar, knowledgeable, aware, savvy) |
| kept posted(expression, adjective, familiar, knowledgeable, witting) |
| mindful(adjective, familiar, knowledgeable, aware, savvy) |
| no stranger to(expression, adjective, idiom, familiar, knowledgeable) |
| plugged in(expression, adjective, familiar, knowledgeable, witting) |
| strong in |
| tuned in(expression, adjective, familiar, knowledgeable, witting) |
| up(adjective, familiar, knowledgeable, aware, savvy) |
| versant(adjective, familiar, knowledgeable, witting, aware) |
| well-read |
| well up in(expression, adjective, idiom, familiar, knowledgeable) |
| with it(expression, adjective, familiar, knowledgeable, aware) |
| able to recognize(expression, idiom, witting, versant, supraliminal) |
| acclimated(adjective, plain, common, knowing) |
| accustomed(adjective, plain, common, familiar, conversant) |
| advised(familiar, conversant) |
| aground(witting, versant, pansophic) |
| alive to(expression, witting, versant, supraliminal) |
| amicable |