| precipitate(noun, adjective, prompt, passionate, violent) |
| adroit(adjective, light, smooth, sharp, smart) |
| flying(adjective, hot, fast, velocity, rapid) |
| shrewd(adjective, understanding, sharp, smart, bright) |
| breakneck(adjective, prompt, violent, hot, fast) |
| alive(adjective, cool, keen, smart, bright) |
| canny(adjective, cool, sharp, smart, bright) |
| headlong(noun, adjective, passionate, violent, fast) |
| momentary(adjective, time, brief, transient, transitory) |
| perspicacious(adjective, understanding, keen, sharp, smart) |
| quickly(adjective, adverb, fast, rapidly, soon) |
| spirited(adjective, sharp, bright, energetic, lively) |
| sprightly(adjective, pleasant, keen, sharp, smart) |
| vigorous(adjective, pleasant, keen, sharp, smart) |
| dexterous(adjective, light, smooth, keen, smart) |
| express(adjective, direct, prompt, fast, velocity) |
| impatient(adjective, violent, fast, restless, fiery) |
| lightning(adjective, rapid, speedy, urgent, tumultuous) |
| punctual(adjective, adverb, characteristic, time, quality) |
| quick-witted(adjective, cool, sharp, ability, smart) |