| hard(adjective, tough, severe, difficult, offensive) |
| harmful(adjective, risky, dangerous, menacing, unsafe) |
| harsh(dark, negative, hostile, unfriendly, disapproving) |
| horrible(adjective, strong, severe, evil, obscure) |
| horrifying(verb, adjective, frightening) |
| ill-boding(adjective, warning, menacing, unfavorable, intimidating) |
| imperiling(verb, endangering) |
| in the cards(expression, adjective, idiom, likely, possible) |
| jeopardizing(verb, endangering) |
| jeopardous(adjective, dangerous) |
| leaden |
| morose(adjective, unpleasant, horrible, disagreeable, dreadful) |
| nearing(adjective, near, likely, possible, immediate) |
| offensive(adjective, tough, dark, unpleasant, violent) |
| precarious(adjective, bad, heavy, uncertain, risky) |
| saturnine(adjective, unpleasant, horrible, disagreeable, dreadful) |
| scaring(verb, frightening) |
| scary |
| scowling(adjective, close, evil, nasty, unpleasant) |
| sombre |