- Definitions|2
- Thesaurus|856
- Abbreviations|0
106 entries under tough topic. ×
| pitiless(adjective, animal, mean, hard) | |
| iron(adjective, mean, strong, hard) | |
| steadfast(adjective, firm, determined, resolute) | |
| firm(adjective, mean, strong, hard) | |
| inhuman(adjective, animal, mean, hard) | |
| steely(adjective, strong, hard, determined) | |
| vindictive(adjective, mean, hard, severe) | |
| determined(adjective, strong, hard, harsh) | |
| dogged(adjective, appearance, mean, hard) | |
| immovable(adjective, mean, strong, hard) | |
| stiff-necked(adjective, mean, strong, hard) | |
| uncompliant(adjective, firm, resist, determined) | |
| savage(adjective, animal, mean, hard) | |
| severe(adjective, appearance, mean, strong, hard) | |
| unmerciful(adjective, mean, hard, severe) | |
| bullheaded(adjective, strong, hard, firm) | |
| mulish(adjective, mean, strong, hard) | |
| uncompassionate(adjective, animal, mean, hard) | |
| barbarous(adjective, animal, appearance, mean, hard) | |
| hard-boiled(adjective, mean, strong, hard) |
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| APA | Smart Define. (2016). implacable thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/implacable/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "implacable thesaurus" https://smartdefine.org/implacable/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2016, implacable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/implacable/thesaurus/synonyms>. |
| MLA | Smart Define. "implacable thesaurus" 24 March 2016. Web. 21 September 2026. <https://smartdefine.org/implacable/thesaurus/synonyms> |