177 entries under sturdy topic. ×
| right(adjective, close, complete, correct, moderate) | |
| safe(adjective, calm, good, clear, strong) | |
| sober(adjective, moderate, severe, harsh, solid) | |
| stark(adjective, strong, hard, sound, tough) | |
| thorough(adjective, clear, complete, total, solid) | |
| active(adjective, strong, sound, tough, fit) | |
| calm(verb, adjective, fix, strong, secure) | |
| cool(adjective, solid, cold, indifferent, stable) | |
| even(adjective, calm, strong, secure, solid) | |
| hard-boiled(adjective, mean, strong, hard, tough) | |
| hard-core(adjective, close, strong, hard, tough) | |
| hard-shell(adjective, strong, hard, tough, severe) | |
| imperturbable(adjective, solid, stable, fixed) | |
| intact(complete, solid, vigorous) | |
| liege(adjective, continue, honest, solid, pure) | |
| long-lasting(adjective, tough, familiar, established) | |
| rough(adjective, strong, hard, tough, severe) | |
| steel(verb, adjective, close, set, fix) | |
| uniform(adjective, calm, strong, secure, solid) | |
| wholehearted(adjective, complete, total, solid, certain) |
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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> |