- Definitions|2
- Thesaurus|574
- Abbreviations|0
76 entries under harden topic. ×
| increase(verb, support, establish, extend, boost) | |
| jell(verb, close, set, fix, settle) | |
| make difficult(verb, expression, strengthen) | |
| thicken(verb, close, set, fix, settle) | |
| wax(verb, support, increase, establish, extend) | |
| braze(verb, set) | |
| casehardened(close, set, firm, dry) | |
| chill(verb, set) | |
| desensitize | |
| familiarize(verb, adjust, adapt) | |
| firm up(verb, expression, phrasal verb, strengthen) | |
| make ready(verb, expression) | |
| mold(verb, set) | |
| naturalize | |
| toughen up(verb, expression, set) | |
| train(verb, rough, prepare, scratch) |
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| APA | Smart Define. (2015). toughen thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/toughen/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "toughen thesaurus" https://smartdefine.org/toughen/thesaurus/synonyms (accessed October 1, 2026). |
| Harvard | Smart Define 2015, toughen thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/toughen/thesaurus/synonyms>. |
| MLA | Smart Define. "toughen thesaurus" 13 April 2015. Web. 1 October 2026. <https://smartdefine.org/toughen/thesaurus/synonyms> |