65 entries under adjective topic. ×
| wrongheaded(persistent, obstinate, insistent, dogged) | |
| adamant(persistent, obstinate, insistent, dogged) | |
| hard-boiled | |
| hard as nails(expression, idiom, tough, rough) | |
| unfeeling(tough, rough, hardened, cynical) |
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| APA | Smart Define. (2011). hard-shelled thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/hard-shelled/thesaurus/synonyms |
| Chicago | Smart Define. 2011. "hard-shelled thesaurus" https://smartdefine.org/hard-shelled/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2011, hard-shelled thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/hard-shelled/thesaurus/synonyms>. |
| MLA | Smart Define. "hard-shelled thesaurus" 24 May 2011. Web. 28 September 2026. <https://smartdefine.org/hard-shelled/thesaurus/synonyms> |