| accidental(adjective, careless, chance, casual, planned) |
| unwitting(adjective, careless, casual, planned, ignorant) |
| chance(adjective, careless, casual, planned, unknowing) |
| casual(adjective, simple, natural, chance, impulsive) |
| undesigned(adjective, planned, intention, unknowing, necessity) |
| unpremeditated(adjective, chance, planned, ignorant, hidden) |
| unplanned(adjective, simple, natural, chance, casual) |
| involuntary(adjective, simple, natural, casual, impulsive) |
| inadvertent(adjective, planned, ignorant, hidden, unconscious) |
| random(adjective, chance, planned, haphazard, accidental) |
| unconscious(adjective, simple, natural, casual, impulsive) |
| unintended(adjective, chance, planned, ignorant, hidden) |
| adventitious(adjective, chance, haphazard, unplanned, accidental) |
| unthinking(adjective, planned, unconscious, necessity, unwilling) |
| automatic(adjective, simple, natural, casual, impulsive) |
| fortuitous(adjective, chance, planned, intention, haphazard) |
| causeless(adjective, accidental, chance 2) |
| instinctive(adjective, simple, natural, casual, impulsive) |
| unwilled(adjective, unconscious, involuntary) |
| haphazard(adjective, chance, planned, unknowing, unaware) |