| simple(adjective, clean, wholesome, unpolluted, unadulterated) |
| spotless(adjective, clean, refined, wholesome, unpolluted) |
| stainless(adjective, clean, refined, wholesome, unpolluted) |
| straight(adjective, clean, wholesome, unpolluted, unadulterated) |
| total(adjective, clean, wholesome, unpolluted, unadulterated) |
| transparent(adjective, clean, wholesome, unpolluted, unadulterated) |
| true(adjective, clean, wholesome, unpolluted, unadulterated) |
| twenty-four carat(expression, adjective, clean, wholesome, unpolluted) |
| unalloyed(adjective, clean, wholesome, unpolluted, unadulterated) |
| unclouded(adjective, clean, wholesome, unpolluted, unadulterated) |
| uncreative(adjective, sterile) |
| undiluted(adjective, clean, wholesome, unpolluted, unadulterated) |
| uninfected |
| uninventive(adjective, sterile) |
| unmingled(adjective, clean, wholesome, unpolluted, unadulterated) |
| unmixed(adjective, clean, wholesome, unpolluted, unadulterated) |
| unstained(adjective, clean, refined, wholesome, unpolluted) |