| relaxing |
| repellent(adjective, nasty, ugly, unappealing) |
| repugnant(adjective, plain, awful, ugly, revolting) |
| rude |
| run-of-the-mill(adjective, simple, ordinary, familiar, natural) |
| self-effacing(adjective, soft, humble, shy, meek) |
| serene |
| small(adjective, soft, shy, meek, frugal) |
| spare(adjective, soft, shy, meek, frugal) |
| unappealing(adjective, nasty, plain, ugly, repulsive) |
| uncluttered(adjective, simple, clean, plain, pure) |
| uncouth(adjective, common, usual, vulgarity) |
| unembellished(adjective, simple, clean, plain, pure) |
| unexceptional(adjective, ordinary, familiar, normal, commonplace) |
| unimportant |
| unpleasant(adjective, nasty, plain, ugly, unattractive) |
| unpolished(adjective, plain, vulgarity) |
| unprepossessing(adjective, plain, unpleasant, awful, revolting) |
| vulgar |
| Spartan(adjective, simple, clean, plain, pure) |