207 entries under hard topic. ×
| blubbery(deep, fat, broad, bulky) | |
| broad(deep, fat, bulky) | |
| by the book(expression, adjective, idiom, strong) | |
| chunky(deep, fat, broad, bulky) | |
| deeply | |
| dimensional(adjective, strong, substantial, sturdy) | |
| fat(adjective, deep, broad, bulky) | |
| ferric(adjective, strong, tough, sturdy) | |
| ferrous(adjective, strong, tough, sturdy) | |
| frowning(adjective, strong, tough, severe) | |
| hang-tough(adjective, strong, tough, severe) | |
| hard-and-fast(rigid, inflexible, strict, obstinate) | |
| heartless(mean, harsh, inflexible, obstinate) | |
| hulk(adjective, strong, substantial, sturdy) | |
| massed(adjective, strong, substantial, sturdy) | |
| mortified(adjective, strong, tough, severe) | |
| obese(deep, fat, broad, bulky) | |
| pudgy(deep, fat, broad, bulky) | |
| rock(adjective, strong, substantial, sturdy) | |
| rock hard(expression, adjective, strong, tough) |
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| APA | Smart Define. (2016). firm thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/firm/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "firm thesaurus" https://smartdefine.org/firm/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2016, firm thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/firm/thesaurus/synonyms>. |
| MLA | Smart Define. "firm thesaurus" 31 March 2016. Web. 27 September 2026. <https://smartdefine.org/firm/thesaurus/synonyms> |