| staid(adjective, sober, serious, earnest, serious-minded) |
| prudent(adjective, reasonable, careful, intelligent, aware) |
| somber(adjective, sober, serious, earnest, serious-minded) |
| cute(adjective, smart, sensible, thoughtful, shrewd) |
| aware(adjective, reasonable, careful, intelligent, astute) |
| brainstorm |
| careful(adjective, reasonable, intelligent, aware, astute) |
| clever(adjective, smart, sensible, thoughtful, shrewd) |
| cogitative(adjective, smart, sensible, thoughtful, shrewd) |
| contemplative(adjective, smart, sensible, thoughtful, shrewd) |
| erudite(adjective, smart, sensible, thoughtful, shrewd) |
| judicious(adjective, reasonable, careful, intelligent, aware) |
| rational(adjective, reasonable, careful, intelligent, aware) |
| reasonable(adjective, careful, intelligent, aware, astute) |
| reflective(adjective, smart, sensible, thoughtful, shrewd) |
| sagacious(adjective, smart, sensible, thoughtful, shrewd) |
| sapient(adjective, smart, sensible, thoughtful, shrewd) |
| shrewd(adjective, smart, sensible, thoughtful, wary) |
| sombre(adjective, sober, serious, earnest, serious-minded) |
| astute(adjective, reasonable, careful, intelligent, aware) |