| tuned in(expression, adjective, understanding, sensible, familiar) |
| used to(expression, adjective, familiar, knowledgeable, savvy) |
| versed in(expression, adjective, familiar, knowledgeable, aware) |
| vigilant(adjective, understanding, cool, keen, sensible) |
| watchful(adjective, understanding, cool, keen, sensible) |
| with it(expression, adjective, understanding, keen, sensible) |
| able to recognize(expression, adjective, idiom, understanding, keen) |
| abstruse(knowledgeable, cultured, educated, erudite, enlightened) |
| academic(knowledgeable, cultured, educated, erudite, enlightened) |
| accomplished fact |
| acquainted with |
| adequate(adjective, smart, experience, know, capable) |
| aesthetic(adjective, understanding, keen, sensible, certain) |
| alive to(expression, adjective, understanding, keen, sensible) |
| all there(expression, adjective, reasonable, sympathetic, rational) |
| apperceptive(adjective, understanding, keen, sensible, certain) |
| apprehending |
| apprised(adjective, understanding, keen, sensible, certain) |
| assured(adjective, understanding, keen, sensible, certain) |
| astute(adjective, understanding, cool, reasonable, significant) |