- Definitions|2
- Thesaurus|824
- Abbreviations|0
| hang-tough(adjective, strong, hard, tough, severe) | |
| hard-boiled(adjective, strong, hard, tough, severe) | |
| hard-line(adjective, strong, hard, tough, severe) | |
| hard-nosed(adjective, close, strong, hard, tough) | |
| hard-shell(adjective, strong, hard, tough, severe) | |
| hardheaded(adjective, strong, hard, tough, severe) | |
| hateful(adjective, evil, nasty, harsh, vicious) | |
| heavy-handed | |
| hellish(adjective, evil, nasty, harsh, vicious) | |
| immutable | |
| impliable | |
| inclement | |
| inconsiderate | |
| indurated | |
| inelastic | |
| inhumane(adjective, evil, nasty, harsh, vicious) | |
| intransigent | |
| inured | |
| iron-hard | |
| ironlike |
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| APA | Smart Define. (2015). flinty thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/flinty/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "flinty thesaurus" https://smartdefine.org/flinty/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, flinty thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/flinty/thesaurus/synonyms>. |
| MLA | Smart Define. "flinty thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/flinty/thesaurus/synonyms> |