| quick(adjective, sharp, informal, lively) |
| rapid(adjective, sharp, lively, fast) |
| speedy(adjective, fast, quick, velocity) |
| fleet(adjective, sharp, fast, quick) |
| flying(fast, quick, velocity, nimble) |
| swift(adjective, sharp, lively, fast) |
| agile(adjective, fast, quick, velocity) |
| nimble(fast, quick, velocity, rapid) |
| expeditious(fast, quick, velocity, nimble) |
| active(sharp, lively, fast, quick) |
| electric(adjective, quick, velocity, rapid) |
| breakneck(fast, quick, nimble, speedy) |
| brisk(sharp, lively, fast, quick) |
| hasty(fast, quick, nimble, speedy) |
| snappy(prompt, fast, quick, rapid) |
| accelerated(prompt, fast, quick, speedy) |
| dashing(quick, rapid, nimble, speedy) |
| expeditive(fast, quick, nimble, speedy) |
| hurried(fast, quick, nimble, speedy) |
| in nothing flat(expression, fast, quick, speedy) |