| au fait(expression, adjective, keen, smart, familiar) |
| capacity(noun, understanding, power, ability, thing) |
| catch on(verb, expression, phrasal verb, hold, get) |
| cleverness(noun, understanding, strength, knowledge, ability) |
| common sense(noun, expression, idiom, understanding, knowledge) |
| compass(verb, understand, perceive) |
| crafty(adjective, smooth, keen, sharp, smart) |
| cute(understanding, sharp, smart, shrewd, perceptive) |
| dexterous(adjective, smooth, keen, smart, bright) |
| discretion(noun, skill, grace, poise, elegance) |
| erudite(adjective, familiar, wise, knowledgeable, perceptive) |
| expert(adjective, keen, smart, bright, familiar) |
| gumption(noun, understanding, knowledge, sense, caution) |
| heady(adjective, smooth, keen, sharp, smart) |
| judgement |
| judgment(noun, understanding, knowledge, mind, line) |
| ken(noun, verb, phrasal verb, get, accept) |
| learned(verb, adjective, smooth, keen, smart) |
| nous(noun, style, knowledge, sense, wit) |
| opportunistic(subtle, tactful, suave) |