| quick(adjective, direct, keen, express, prompt) |
| swift(adjective, direct, express, prompt, energetic) |
| fast(adjective, adverb, direct, express, prompt) |
| speedy(adjective, direct, express, prompt, energetic) |
| hasty(adjective, moving, express, prompt, violent) |
| fleet(noun, adjective, property, hot, fast) |
| brisk(adjective, sharp, lively, hot, fast) |
| expeditious(adjective, express, prompt, property, hot) |
| prompt(adjective, keen, sharp, express, energetic) |
| ready(adjective, keen, express, prompt, intense) |
| breakneck(adjective, violent, hot, fast, quick) |
| immediate(adjective, keen, express, prompt, energetic) |
| nimble(adjective, prompt, energetic, hot, fast) |
| lively(adjective, sharp, energetic, fast, quick) |
| agile(adjective, energetic, hot, fast, quick) |
| hurried(adjective, express, prompt, energetic, violent) |
| snappy(adjective, prompt, hot, fast, quick) |
| express(verb, adjective, direct, keen, prompt) |
| instantaneous(adjective, fast, precise, responsive, early) |
| abrupt(adjective, violent, fast, quick, speedy) |