| obligatory(forced, unwilling, compulsory) |
| oblivious(careless, thoughtless, ignorant, unknowing, unaware) |
| occasional(chance, unplanned, unpremeditated) |
| odd(chance, unplanned, unpremeditated) |
| offhand(chance, unplanned, unpremeditated) |
| outrageous(careless, thoughtless, inconsiderate) |
| rash(careless, thoughtless, inconsiderate) |
| reluctant(forced, unwilling, obligatory, compulsory) |
| repressed(ignorant, hidden, unconscious, unaware, oblivious) |
| rude(careless, thoughtless, inconsiderate) |
| senseless(careless, thoughtless, unknowing, unaware, inconsiderate) |
| spur-of-the-moment |
| subconscious(ignorant, hidden, unconscious, unaware, oblivious) |
| subliminal(ignorant, hidden, unconscious, unaware, oblivious) |
| suppressed(ignorant, hidden, unconscious, unaware, oblivious) |
| tactless(adjective, rude, careless, thoughtless, unwise) |
| thoughtless(careless, inconsiderate) |
| unacquainted(unknowing, unaware, unsuspecting) |
| unanticipated |
| unaware(ignorant, hidden, unconscious, unknowing, oblivious) |