| in nothing flat(expression, hot, fast, quick, speedy) |
| inattentive(adjective, slight, detail, wild, silly) |
| intolerant(adjective, keen, violent, anxious, nervous) |
| irrational(adjective, careless, thoughtless, impulsive, reckless) |
| irresponsible(adjective, wild, foolish, casual, thoughtless) |
| keen(adjective, energetic, violent, active, anxious) |
| lightning(adjective, speed) |
| makeshift |
| misguided(adjective, foolish, rash, risky, imprudent) |
| negligent(adjective, sharp, rude, careless, indifferent) |
| nippy(adjective, fast, rapid, swift, urgent) |
| not well-thought-out |
| offhand(adjective, rough, casual, quick, thoughtless) |
| on the double(expression, adjective, hot, fast, quick) |
| overconfident |
| overzealous(nervous, emotional, restless, volatile, fiery) |
| peppery |
| pronto(adjective, hot, fast, quick, rapid) |
| quick as lightning(expression, idiom, instantaneity) |
| quick as thought(expression, idiom, instantaneity) |