| accidental(adjective, chance, ignorant, hidden, intention) |
| unplanned(adjective, chance, planned, unknowing, unintentional) |
| inadvertent(adjective, careless, casual, innocent, thoughtless) |
| unintentional(adjective, chance, planned, ignorant, hidden) |
| unwitting(adjective, planned, ignorant, hidden, unconscious) |
| undesigned(adjective, planned, intention, unknowing, unintentional) |
| unpremeditated(adjective, rude, careless, chance, casual) |
| unconscious(adjective, careless, casual, thoughtless, unwise) |
| casual(adjective, chance, unplanned, unintentional, accidental) |
| fortuitous(adjective, chance, intention, unplanned, unintentional) |
| involuntary(adjective, ignorant, hidden, unconscious, oblivious) |
| undevised(adjective, planned, unplanned, unintentional, accidental) |
| unthinking(adjective, careless, thoughtless, inconsiderate, unwilling) |
| chance(adjective, unknowing, unaware, unplanned, unintentional) |
| random(adjective, chance, unplanned, unintentional, accidental) |
| uncalculated(adjective, ignorant, hidden, unconscious, oblivious) |
| unmeant(adjective, rude, careless, casual, innocent) |
| aimless(adjective, unknowing, unaware, unplanned, unintentional) |
| automatic(unwilling, obligatory, compulsory) |
| spontaneous(adjective, chance, unwilling, unplanned, obligatory) |