| used to(expression, adjective, familiar, knowledgeable, savvy) |
| versed in(expression, adjective, familiar, knowledgeable, aware) |
| vigilant(adjective, understanding, keen, sensible, certain) |
| watchful(adjective, understanding, keen, sensible, certain) |
| well-versed(knowledgeable, conversant) |
| well informed(adjective, knowledge, experience, skill, expert) |
| well read(adjective, knowledge, experience, skill, expert) |
| well up(adjective, knowledge, experience, skill, expert) |
| well up in(expression, adjective, idiom, familiar, knowledgeable) |
| wise(adjective, understanding, alert, familiar, knowledgeable) |
| wised up(expression, alert, familiar, wise, knowledgeable) |
| groovy(adjective, alert, familiar, wise, knowledgeable) |
| in on(expression, adjective, understanding, keen, sensible) |
| noting(adjective, understanding, keen, sensible, certain) |
| seeing(adjective, understanding, keen, sensible, certain) |
| accomplished(competent, experienced, proficient) |
| accustom |
| achieve |
| acknowledge |
| acquaint oneself with(verb, phrasal verb, learning) |