| unembellished(adjective, simple, honest, modest, humble) |
| unfailing(adjective, honest, sensible, reliable, mature) |
| unfussy(adjective, cool, simple, plain, relaxed) |
| unimposing(adjective, simple, honest, modest, straightforward) |
| uninhibited(adjective, simple, unsophisticated, unpretentious, funky) |
| unobtrusive(adjective, simple, honest, modest, humble) |
| unofficial(adjective, simple, plain, relaxed, straightforward) |
| unostentatious(adjective, simple, honest, modest, humble) |
| unpresumptuous(adjective, simple, honest, modest, straightforward) |
| unpretentious(adjective, simple, honest, modest, unaffected) |
| unrefined(adjective, simple, unsophisticated, unpretentious, funky) |
| unrestrained(adjective, simple, plain, relaxed, straightforward) |
| unspoiled(adjective, simple, honest, modest, straightforward) |
| up front(expression, adjective, honest, modest, humble) |
| upright(adjective, honest, sensible, reliable, accurate) |
| urbane(adjective, simple, plain, relaxed, straightforward) |
| valid(adjective, honest, sensible, reliable, mature) |
| veracious(adjective, honest, sensible, reliable, accurate) |
| without ceremony(expression, adjective, simple, relaxed, straightforward) |
| aloof(adjective, cool, relaxed, easygoing, laid-back) |