| clever(adjective, good, smooth, keen, sharp) |
| efficient(adjective, precise, decent, adequate, skilled) |
| intelligent(adjective, good, smooth, keen, sharp) |
| keen(adjective, smooth, sharp, smart, bright) |
| on the job(expression, adjective, idiom, adverb, keen) |
| skilled(adjective, smart, bright, intelligent, decent) |
| vigilant(adjective, sharp, bright, lively, alert) |
| all ears(expression, adjective, sharp, bright, lively) |
| aware(adjective, keen, careful, considerate, attentive) |
| experienced(adjective, good, smooth, keen, sharp) |
| heedful(adjective, sharp, bright, lively, alert) |
| ingenious(adjective, smooth, keen, sharp, smart) |
| open-eyed(adjective, keen, sharp, alert, careful) |
| wise(adjective, smooth, keen, sharp, smart) |
| active(adjective, sharp, bright, lively, alert) |
| adroit(adjective, smooth, sharp, smart, bright) |
| agog(keen, alert, careful, attentive, watchful) |
| astute(adjective, smooth, keen, sharp, smart) |
| au fait(expression, adjective, familiar, decent, adequate) |
| competent(adjective, good, direct, smart, bright) |