| diplomatic(adjective, sensible, wise, shrewd) |
| discreet(adjective, reasonable, honest, sensible, fair) |
| farsighted(adjective, sensible, intelligent, wise, practical) |
| grave(adjective, sound, knowledgeable, cultured, educated) |
| intellectual(sound, bright, intelligent, knowledgeable, cultured) |
| moderate(adjective, sound, sensible, rational, healthy) |
| percipient |
| philosophic(adjective, sound, moral, knowledgeable, cultured) |
| profound(sensible, wise, moral, shrewd, theoretical) |
| quick(adjective, bright, intelligent, sharpened, whetted) |
| quick-witted(adjective, bright, sensible, intelligent, wise) |
| savant |
| sober(adjective, sensible, rational, healthy, stable) |
| tactful(adjective, sensible, intelligent, sage) |
| understanding(adjective, sound, sharp, sensible, intelligent) |
| valid(adjective, moderate, honest, fair, proper) |
| well-advised(adjective, sensible, wise, shrewd) |
| well-grounded(adjective, sound, reason, knowledgeable, cultured) |
| well-read(adjective, knowledge, experience, skill, expert) |
| crafty(adjective, sensible, intelligent, sage) |