| sharp-witted(smart, intelligent, brilliant, clever) |
| sharp as a tack(expression, idiom, smart, bright, clever) |
| shrewd(smart, intelligent, clever) |
| skillful(smart, nimble-witted) |
| slick(smart, bright, intelligent, clever) |
| smart(intelligent, clever, skillful, nimble-witted) |
| smart as a whip(expression, idiom, smart, skillful, nimble-witted) |
| there(smart, skillful, nimble-witted) |
| tuned in(expression, smart, skillful, nimble-witted) |
| up to speed(expression, idiom, smart, skillful, nimble-witted) |
| vet(smart, skillful, nimble-witted) |
| wakeful |
| wary |
| whiz(smart, bright, intelligent, clever, skillful) |
| wired(smart, bright, intelligent, clever, slick) |
| wise(smart, intelligent, clever) |
| wised up(expression, smart, skillful, nimble-witted) |
| with good eyesight(expression, idiom) |
| witty(smart, bright, intelligent, brilliant, clever) |