| sharp-witted(adjective, keen, sharp, smart, bright) |
| sharp as a tack(expression, idiom, smart, skilled, capable) |
| sleepless(keen, alert, careful, attentive, watchful) |
| slick(adjective, smooth, keen, sharp, smart) |
| spirited(adjective, sharp, bright, lively, alert) |
| there(adjective, good, smooth, smart, clean) |
| unsleeping(adjective, keen, alert, careful, cautious) |
| up to snuff(expression, fair, agreeable, adequate, qualified) |
| vital(adverb, sharp, attention, alive) |
| whiz(adjective, smooth, sharp, smart, bright) |
| with it(expression, adjective, adverb, sharp, lively) |
| A-OK(cool, pleasant, fair, big, agreeable) |
| according to Hoyle(expression, idiom, right, perfect, exact) |
| ace(expert, skilled, qualified, capable, skillful) |
| actual(right, perfect, exact, proper, true) |
| adapted(decent, knowledgeable, adequate, skilled, qualified) |
| admissible(cool, pleasant, fair, big, agreeable) |
| agreeable(pleasant, fair, suitable, adequate, satisfactory) |
| alive to(expression, adjective, careful, knowledgeable, cautious) |
| all around(expression, decent, knowledgeable, adequate, qualified) |