| unstable(adjective, upset, smooth, delicate, wild) |
| vulnerable(adjective, bad, heavy, unstable, dangerous) |
| grave(adjective, dangerous, crucial) |
| menacing(adjective, bad, heavy, risky, dangerous) |
| dicey(adjective, delicate, uncertain, sensitive, unstable) |
| ominous(adjective, heavy, gloomy, acute, major) |
| serious(adjective, bad, heavy, uncertain, significant) |
| wicked(adjective, severe, delicate, informal, awful) |
| awkward(adjective, difficult, cumbersome, unwieldy) |
| tricky(adjective, difficult, delicate, rude, uncertain) |
| difficult(adjective, adverse, risky, dangerous, treacherous) |
| explosive(adjective, upset, unstable, shaky, insecure) |
| jeopardous(adjective, delicate, uncertain, sensitive, capable) |
| sensitive(adjective, delicate, uncertain, unstable, doubtful) |
| slippery(adjective, smooth, delicate, uncertain, unstable) |
| unsteady(adjective, upset, smooth, delicate, uncertain) |
| unsure(adjective, delicate, loose, uncertain, unstable) |
| alarming(adjective, bad, heavy, fear, insecure) |
| dodgy(adjective, risky, dangerous, treacherous, unsafe) |
| harmful(adjective, risky, dangerous, injurious, unsafe) |