55 entries under terrible topic. ×
| frightful(adjective, appearance, awful, dreadful) | |
| ghoulish(adjective, nasty, awful, dreadful) | |
| horrific(awful, dreadful) | |
| strange(adjective, awful, dreadful, weird) | |
| bloodcurdling(awful, dreadful) | |
| grisly(appearance, awful, violent, shocking) | |
| morbid(adjective, sad, awful, horrible) | |
| scowling(adjective, close, appearance, rough, nasty) | |
| severe(adjective, hard, offensive, dark) | |
| unearthly(adjective, awful, dreadful, weird) | |
| distressing(hard, severe, offensive, awful) | |
| formidable(adjective, appearance, unpleasant, awful) | |
| ruthless(appearance, corrupt, dishonest, hopeless) | |
| abysmal(awful, dreadful) | |
| appearance | |
| astounding(awful, dreadful) | |
| austere(appearance, hopeless) | |
| barbarous(appearance, hopeless) | |
| dogged(appearance, hopeless) | |
| grievous(adjective, unpleasant, awful, horrible) |
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| APA | Smart Define. (2016). sinister thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/sinister/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "sinister thesaurus" https://smartdefine.org/sinister/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, sinister thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/sinister/thesaurus/synonyms>. |
| MLA | Smart Define. "sinister thesaurus" 3 April 2016. Web. 26 September 2026. <https://smartdefine.org/sinister/thesaurus/synonyms> |