| noxious(adjective, dangerous, injurious, damaging, destructive) |
| poisonous(adjective, dangerous, injurious, damaging, destructive) |
| aberrant(foolish, fantastic) |
| abortionist |
| accessible(adjective, weak, tender, ready, sensitive) |
| accident-sensitive(adjective, unreliable, insecure, treacherous, incalculable) |
| acute(adjective, dangerous) |
| adventuresome |
| ailing(unstable, ill, shaky, insane, unhealthy) |
| ambiguous(adjective, delicate, uncertain, unstable, dishonest) |
| assailable(adjective, weak, tender, ready, sensitive) |
| at risk(expression, weak, susceptible, vulnerable, insecure) |
| austere |
| bad-tempered(adjective, delicate, sensitive, tricky, impatient) |
| baleful(injurious, damaging, destructive, menacing, intimidating) |
| baneful(injurious, damaging, destructive, menacing, intimidating) |
| bold |
| borderline(adjective, delicate, uncertain, unstable, doubtful) |
| breakneck |
| built uponsand(expression, idiom, danger) |