| dynamite(familiar, sophisticated, knowledgeable, skilled, competent) |
| embittered(adjective, dissatisfied, disappointed, disheartened, disenchanted) |
| expert(adjective, cool, smart, significant, familiar) |
| familiar(knowledgeable, skilled, qualified, informed) |
| foxy(smart, shrewd, clever, subtle, artful) |
| frugal(smart, shrewd, clever, subtle, artful) |
| full-fledged |
| gingerly(cautious, tactful, circumspect) |
| guarded(cautious, tactful, circumspect) |
| having fancy footwork(expression, idiom, smart, clever, subtle) |
| having foresight(expression, cautious, tactful, circumspect) |
| having something on the ball(expression, idiom, familiar, sophisticated, knowledgeable) |
| heedful(cautious, tactful, circumspect) |
| hep(smart, shrewd, clever, subtle, artful) |
| hip |
| in the know(expression, idiom, familiar, sophisticated, knowledgeable) |
| indifferent(adjective, dissatisfied, disappointed, disheartened, embittered) |
| ingenious(smart, shrewd, clever, subtle, artful) |
| insightful(adjective, cool, significant, intelligent, brilliant) |
| instructed(familiar, sophisticated, knowledgeable, skilled, competent) |