| insidious(adjective, tricky, sneaky) |
| suicidal |
| ugly(adjective, bad, severe, awful, heavy) |
| unreliable(adjective, delicate, uncertain, unstable, doubtful) |
| unsound(adjective, severe, delicate, awful, terrible) |
| iffy(adjective, delicate, uncertain, sensitive, unstable) |
| adventurous(adjective, safety) |
| desperate |
| detrimental(adjective, adverse, harmful, dangerous, injurious) |
| lethal(adjective, risky, dangerous, unsafe) |
| self-destructive |
| severe(adjective, awful, heavy, terrible, dreadful) |
| untrustworthy(insecure, risky, danger, dangerous) |
| venturesome(adjective, bad, delicate, heavy, uncertain) |
| acute(adjective, severe, awful, heavy, terrible) |
| baneful(warning, harmful, threatening, injurious, detrimental) |
| damaging(adjective, harmful, dangerous, injurious, detrimental) |
| destructive(adjective, severe, rude, awful, heavy) |
| doubtful(adjective, delicate, uncertain, unstable, unsettled) |
| dubious(adjective, delicate, uncertain, unstable, doubtful) |