| up(adjective, adverb, familiar, skilled, competent) |
| up-to-date(familiar, current, skilled, informed, experienced) |
| urbane(adjective, sophisticated, experienced, mature, civilized) |
| wise to(expression, adjective, understanding, cool, keen) |
| suitable(adjective, competent, capable, able, fitted) |
| tuned in(expression, adjective, understanding, cool, keen) |
| accustomed(familiar, skilled, qualified, informed) |
| ace |
| adult |
| advanced |
| alive to(expression, careful, cautious, aware, attentive) |
| all around(expression, suitable, adequate, competent, capable) |
| appercipient |
| appraised(adjective, alert, familiar, wise, responsive) |
| appreciate |
| appreciative(adjective, understanding, enthusiastic, alert, familiar) |
| apprehending |
| apprised(adjective, understanding, alert, familiar, wise) |
| artful(adjective, knowledge, experience, skill, expert) |
| attentive(adjective, understanding, alert, familiar, careful) |