| immediate(adjective, informal, snap, unrehearsed) |
| impatient(adjective, violent, fast, quick) |
| impolitic(adjective, foolish, thoughtless, unwise) |
| improvisatory(adjective, informal, snap, unrehearsed, snapper) |
| improviso(adjective, informal, snap, impromptu, unrehearsed) |
| imprudent(adjective, foolish, thoughtless, unwise) |
| inappropriate(adjective, foolish, thoughtless, unwise) |
| incautious(adjective, foolish, thoughtless, unwise) |
| inconsiderate(adjective, foolish, thoughtless, unwise) |
| indiscreet(adjective, foolish, thoughtless, unwise) |
| inexpedient(adjective, foolish, thoughtless, unwise) |
| informal(adjective, snap, unrehearsed) |
| injudicious(adjective, foolish, thoughtless, unwise) |
| jamming(adjective, informal, snap, unrehearsed) |
| jump the gun(expression, adjective, idiom, violent, fast) |
| madcap(adjective, foolish, thoughtless, unwise) |
| made-up(adjective, informal, snap, unrehearsed) |
| makeshift(adjective, adverb, informal, snap, offhand) |
| misguided(adjective, foolish, thoughtless, unwise) |
| napping(adjective, vulnerable, unaware) |