| neat(adjective, skillful, nimble, artful, practiced) |
| nifty(adjective, skillful, nimble, artful, practiced) |
| nimble(adjective, skillful, artful, practiced) |
| nimble-witted(adjective, smart, bright, active, wise) |
| no dummy(expression, adjective, smart, ready, quick) |
| not born yesterday(expression, adjective, idiom, smart, quick) |
| observant(adjective, open, friendly, smart, bright) |
| on the beam(expression, adjective, idiom, skillful, nimble) |
| open(adjective, friendly, sympathetic, ready, sensitive) |
| open-minded(adjective, open, friendly, sympathetic, ready) |
| open to suggestions(expression, adjective, idiom, open, friendly) |
| penetrating(adjective, smart, intelligent, brilliant, clever) |
| penetrative(adjective, smart, bright, intelligent, brilliant) |
| perceptive(adjective, open, keen, sharp, smart) |
| perspicacious(adjective, keen, smart, bright, shrewd) |
| proficient(adjective, smart, skillful, nimble, artful) |
| prompt(adjective, smart, bright, ready, quick) |
| pushover(adjective, open, friendly, sympathetic, ready) |
| quick(adjective, smart, bright, intelligent, competent) |
| quick-witted(adjective, smart, bright, intelligent, clever) |