| sound(adjective, reasonable, sensible, healthy, sober) |
| trenchant(adjective, severe, sharp, harsh, critical) |
| watchful(adjective, understanding, cool, reasonable, keen) |
| alive(adjective, cool, smart, bright, alert) |
| analytical(adjective, clear, sound, reasonable, sharp) |
| argute(sharp, smart, intelligent, clever, astute) |
| awake(adjective, understanding, cool, reasonable, keen) |
| calculating(adjective, smooth, reasonable, keen, sharp) |
| cautious(adjective, sensible, sensitive, wise, practical) |
| clear-sighted(adjective, alert, intelligent, wise, watchful) |
| cognizant(adjective, understanding, cool, reasonable, keen) |
| commonsensical(adjective, clear, reasonable, sensible, healthy) |
| competent(adjective, good, cool, keen, sharp) |
| conscious(adjective, understanding, cool, reasonable, keen) |
| considerate(adjective, reasonable, sensible, delicate, sympathetic) |
| detecting(verb, correct, alert, intelligent, perceptive) |
| dexterous(adjective, bright, sensitive, discreet, diplomatic) |
| discriminatory |
| elegant(adjective, superior, sophisticated, advanced) |
| expert(adjective, good, cool, keen, sharp) |