| straightforward(adjective, nature, characteristic, purity) |
| true(adjective, nature, characteristic, purity) |
| unadorned(adjective, nature, characteristic, purity) |
| unaffected(adjective, nature, characteristic, purity) |
| uncontrived(adjective, nature, characteristic, purity) |
| uncultivated(adjective, nature, characteristic, purity) |
| undomesticated(adjective, nature, characteristic, purity) |
| unpretentious(adjective, nature, characteristic, purity) |
| unsophisticated(adjective, nature, characteristic, purity) |
| environment(noun, nature, protection, atmosphere, ecosystem) |
| concrete(adjective, characteristic, material, reality) |
| corporeal(adjective, characteristic, material, reality) |
| environmental(adjective, characteristic, material, reality) |
| gross(adjective, characteristic, material, reality) |
| materialistic(adjective, characteristic, material, reality) |
| objective(adjective, characteristic, material, reality) |
| palpable(adjective, characteristic, material, reality) |
| phenomenal(adjective, characteristic, material, reality) |
| physical(adjective, characteristic, material, reality) |
| ponderable(adjective, characteristic, material, reality) |