260 entries under adjective topic. ×
| hard-nosed(mean, hard, tough, harsh) | |
| hard-shell(persistent, obstinate, insistent, dogged) | |
| hard-shelled(persistent, obstinate, insistent, dogged) | |
| heady | |
| heather(dull, lead, grim, leaden) | |
| hell-bent(persistent, obstinate, insistent, dogged) | |
| high-proof | |
| high proof | |
| holesome | |
| huff cap | |
| humming | |
| insubordinate(persistent, obstinate, insistent, dogged) | |
| insurgent(persistent, obstinate, insistent, dogged) | |
| inveterate(persistent, obstinate, insistent, dogged) | |
| invincible(persistent, obstinate, insistent, dogged) | |
| iron-willed(determined, resolute, uncompromising, unshakeable) | |
| knitted | |
| livid(dull, lead, grim, leaden) | |
| marrowy | |
| mean(hard, tough, harsh, unfeeling) |
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| APA | Smart Define. (2015). iron thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/iron/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "iron thesaurus" https://smartdefine.org/iron/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2015, iron thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/iron/thesaurus/synonyms>. |
| MLA | Smart Define. "iron thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/iron/thesaurus/synonyms> |