630 entries under adjective topic. ×
| forbidding(hard, tough, harsh, terrible) | |
| frenetic(violent, mad, vicious, unreasonable) | |
| frightening(violent, hostile, brutal, belligerent) | |
| gruff | |
| hard-hearted(mean, hard, tough, evil) | |
| hawkish | |
| horrible(mean, great, tough, severe) | |
| hotheaded(cruel, vicious, brutal, impulsive) | |
| incisive(strong, intense, powerful, deep) | |
| intensive(strong, intense, heavy, powerful) | |
| martial | |
| mordant(hostile, belligerent, quarrelsome) | |
| naughty(bad, cool, wicked, awesome) | |
| obstreperous(hostile, belligerent, quarrelsome) | |
| outrageous | |
| rigorous(hard, tough, harsh, intense) | |
| riotous(rough, violent, wild, cruel) | |
| spiteful(mean, evil, nasty, harsh) | |
| temperamental(bad, cool, passionate, nervous) | |
| terrific(great, tough, difficult, intense) |
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| APA | Smart Define. (2016). fierce thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/fierce/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "fierce thesaurus" https://smartdefine.org/fierce/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, fierce thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/fierce/thesaurus/synonyms>. |
| MLA | Smart Define. "fierce thesaurus" 28 March 2016. Web. 24 September 2026. <https://smartdefine.org/fierce/thesaurus/synonyms> |