| au fait(expression, adjective, idiom, familiar, knowledgeable) |
| canny(adjective, cool, reasonable, significant, rational) |
| erudite(adjective, familiar, knowledgeable, aware, informed) |
| expert(adjective, cool, smart, experience, significant) |
| feeling(adjective, understanding, keen, fine, sensible) |
| hip(adjective, cool, knowledge, slang, alert) |
| no stranger to(verb, expression, adjective, idiom, phrasal verb) |
| omniscient(adjective, familiar, informed, knowing, well-informed) |
| perspicacious(perceptive, observant, insightful) |
| sagacious(adjective, understanding, cool, reasonable, significant) |
| streetwise(adjective, knowing) |
| abreast(adjective, familiar, knowledgeable, skilled, aware) |
| aware of(verb, expression, phrasal verb, knowledge, wise) |
| discerning(adjective, understanding, cool, reasonable, keen) |
| educated(adjective, familiar, knowledgeable, informed, knowing) |
| experienced(adjective, cool, significant, familiar, intelligent) |
| grounded(adjective, sensible, alert, familiar, wise) |
| hep to(expression, adjective, understanding, keen, sensible) |
| indebted to(adjective, happy, welcome, joyful, satisfied) |
| judicious(adjective, understanding, cool, reasonable, sensible) |