7 entries under strength topic. ×
| iron | |
| adamant(adjective, hardness) | |
| steel | |
| bone | |
| grit | |
| heart of oak(expression, idiom) | |
| iron grip(expression, idiom) |
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Oak on
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| APA | Smart Define. (2015). oak thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/oak/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "oak thesaurus" https://smartdefine.org/oak/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, oak thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/oak/thesaurus/synonyms>. |
| MLA | Smart Define. "oak thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/oak/thesaurus/synonyms> |