| throwaway(adjective, simple, plain, relaxed, straightforward) |
| toss off(expression, adjective, create, bear, find) |
| toss out(expression, adjective, spontaneous, unprepared, impromptu) |
| unartful(adjective, simple, natural, casual, impulsive) |
| unavoidable(adjective, simple, natural, casual, impulsive) |
| unbidden(adjective, simple, natural, casual, impulsive) |
| unceremonious(adjective, simple, plain, relaxed, straightforward) |
| uncompelled(adjective, simple, natural, casual, impulsive) |
| unconscious(adjective, simple, natural, casual, impulsive) |
| unconstrained(adjective, simple, relaxed, natural, straightforward) |
| uncontrived(adjective, simple, natural, casual, impulsive) |
| uncontrolled(adjective, simple, natural, casual, impulsive) |
| unconventional(adjective, simple, plain, relaxed, straightforward) |
| unforced(adjective, simple, natural, casual, impulsive) |
| unfussy(adjective, simple, easy, plain, modest) |
| unintended(chance, unplanned, unpremeditated) |
| unintentional(adjective, simple, natural, chance, casual) |
| unofficial(adjective, simple, plain, relaxed, straightforward) |
| unpremediated(adjective, simple, natural, casual, impulsive) |
| unprompted(adjective, simple, natural, casual, impulsive) |