| severe |
| sheer(adjective, simple, clean, plain, pure) |
| simon-pure |
| spare |
| spartan(adjective, simple, clean, plain, pure) |
| stark |
| straight(adjective, simple, bright, clean, plain) |
| transparent(adjective, simple, bright, clean, plain) |
| twenty-four carat(expression, adjective, simple, bright, clean) |
| unadulterated(adjective, simple, clean, plain, pure) |
| unaffected(adjective, simple, clean, plain, pure) |
| unalloyed(adjective, bright, clean, plain, pure) |
| unblended(adjective, simple, clean, plain, pure) |
| unclouded(adjective, simple, bright, clean, plain) |
| uncombined(adjective, simple, clean, plain, pure) |
| uncomplicated(adjective, simple, clean, plain, pure) |
| uncompounded(adjective, simple, clean, plain, pure) |
| undecorated(adjective, simple, clean, plain, pure) |
| undifferentiated |
| unelaborate(adjective, simple, clean, plain, pure) |