| malignant(adjective, bad, heavy, risky, dangerous) |
| ominous(adjective, dangerous) |
| prejudicial |
| pressing(adjective, dangerous) |
| protect |
| rash |
| rocky(adjective, delicate, uncertain, sensitive, unstable) |
| ruinous(injurious, damaging, destructive) |
| serious(adjective, dangerous) |
| susceptible(adjective, weak, tender, ready, sensitive) |
| terrible(adjective, dangerous) |
| tottering(unstable, ill, shaky, insane, unhealthy) |
| touch-and-go(bad, delicate, heavy, uncertain, unsound) |
| toxic(adjective, dangerous, injurious, damaging, destructive) |
| undefended(vulnerable, insecure, unprotected, unguarded, defenseless) |
| vincible(adjective, weak, tender, vulnerable) |
| wicked(adjective, delicate, uncertain, unsound, rugged) |
| wonky(adjective, unreliable, insecure, treacherous, incalculable) |
| mortal(adjective, dangerous) |
| nasty(adjective, dangerous) |