| environmentally-safe(adjective, nature, feature, environment, condition) |
| environmentally acceptable(expression, feature, environment, ecology) |
| environmentally benign(expression, feature, environment, ecology) |
| environmentally compatible(expression, feature, environment, ecology) |
| environmentally compliant(expression, feature, environment, ecology) |
| environmentally friendly(expression, feature, environment, ecology) |
| environmentally neutral(expression, feature, environment, ecology) |
| environmentally preferred(expression, feature, environment, ecology) |
| environmentally pristine(expression, feature, environment, ecology) |
| environmentally safe(expression, feature, environment, ecology) |
| environmentally sensitive(expression, feature, environment, ecology) |
| environmentally sound(expression, feature, environment, ecology) |
| envirosafe(adjective, nature, feature, environment, condition) |
| inherent(adjective, nature, feature, characteristic, environment) |
| nature-friendly(adjective, nature, feature, environment, condition) |
| non-polluting(adjective, nature, feature, environment, condition) |
| nonpolluting(adjective, nature, feature, environment, condition) |
| pollutant-free(adjective, nature, feature, environment, condition) |
| pollution-free(adjective, nature, feature, environment, condition) |
| surrounding(adjective, nature, environment, condition, detail) |