190 entries under tough topic. ×
| disciplinary(adjective, strong, hard, sturdy) | |
| dyed-in-the-wool(adjective, strong, hard, sturdy) | |
| ferric(adjective, strong, hard, sturdy) | |
| ferrous(adjective, strong, hard, sturdy) | |
| hang-tough(adjective, strong, hard, sturdy) | |
| hard-boiled(adjective, strong, hard, severe) | |
| hard-core(adjective, strong, hard, sturdy) | |
| hard-line(adjective, strong, hard, sturdy) | |
| hard-shell(adjective, strong, hard, severe) | |
| hardheaded(adjective, strong, hard, sturdy) | |
| immovable(adjective, strong, hard, sturdy) | |
| implacable(adjective, strong, hard, harsh) | |
| inexorable(adjective, strong, hard, harsh) | |
| intolerable(adjective, severe, harsh, grim) | |
| mortified(adjective, strong, hard, sturdy) | |
| mulish(adjective, strong, hard, sturdy) | |
| rancorous(adjective, harsh, grim, painful) | |
| resentful(adjective, severe, harsh, grim) | |
| steel(adjective, strong, hard, sturdy) | |
| stiff-necked(adjective, strong, hard, sturdy) |
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| APA | Smart Define. (2015). rugged thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/rugged/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "rugged thesaurus" https://smartdefine.org/rugged/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2015, rugged thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/rugged/thesaurus/synonyms>. |
| MLA | Smart Define. "rugged thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/rugged/thesaurus/synonyms> |