| healthy(adjective, clear, sound, pure, safe) |
| innoxious(adjective, clear, sound, pure, healthy) |
| neutralized(adjective, clear, sound, pure, healthy) |
| not dangerous(expression, adjective, clear, sound, pure) |
| pure(adjective, clear, healthy, safe, innocuous) |
| reliable(adjective, clear, sound, pure, healthy) |
| risk-free(adjective, clear, sound, pure, healthy) |
| riskless(adjective, clear, sound, pure, healthy) |
| secure(adjective, clear, sound, pure, healthy) |
| sound(adjective, clear, pure, healthy, safe) |
| tame(adjective, clear, sound, pure, healthy) |
| trustworthy(adjective, clear, sound, pure, healthy) |
| uninjurious(adjective, clear, sound, pure, healthy) |
| unpolluted(adjective, clear, sound, pure, healthy) |
| wholesome(adjective, clear, pure, healthy, safe) |
| non-toxic |
| nonviolent(adjective, innocuous, benign, harmless) |