- Definitions|2
- Thesaurus|647
- Abbreviations|0
219 entries under adjective topic. ×
| formidable(tough, deep, meaningful) | |
| frantic(harsh, atrocious) | |
| frightening(strong, intense, terrible, menacing) | |
| frightful(violent, vicious, savage, barbaric) | |
| furious(strong, intense, terrible, menacing) | |
| gloomy(rough, nasty, dark) | |
| glum(rough, nasty, dark) | |
| grave(tough, deep, meaningful, deadly) | |
| grievous(heavy, acute, crucial) | |
| grim(violent, vicious, savage, barbaric) | |
| hard(tough, deep, meaningful) | |
| harmful(injurious, deadly, fatal, devastating) | |
| harrowing | |
| harsh | |
| hateful | |
| hazardous(heavy, acute, crucial) | |
| heartless(mean, hateful) | |
| heavy(acute, crucial) | |
| hellish | |
| homicidal(grave, deadly, pernicious, ill-starred) |
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| APA | Smart Define. (2015). feller thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/feller/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "feller thesaurus" https://smartdefine.org/feller/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2015, feller thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/feller/thesaurus/synonyms>. |
| MLA | Smart Define. "feller thesaurus" 13 April 2015. Web. 27 September 2026. <https://smartdefine.org/feller/thesaurus/synonyms> |