- Definitions|2
- Thesaurus|574
- Abbreviations|0
76 entries under harden topic. ×
| strengthen(verb, support, close, set, fix) | |
| brace(verb, support, close, set, fix) | |
| fortify(verb, support, close, set, fix) | |
| reinforce(verb, support, close, set, fix) | |
| temper(noun, verb, close, set, fix) | |
| acclimate(verb, close, set, keep, overcome) | |
| acclimatize(verb, close, set, fix, continue) | |
| anneal(verb, support, close, set, fix) | |
| confirm(verb, support, increase, establish, extend) | |
| season(verb, close, set, keep, overcome) | |
| stiffen(verb, support, close, set, fix) | |
| indurate(verb, close, set, fix, settle) | |
| inure(verb, rough, prepare, strengthen, scratch) | |
| accustom(verb, rough, prepare, adjust, scratch) | |
| buttress(verb, support, close, set, fix) | |
| callous(verb, adjective, close, set, fix) | |
| develop(verb, strengthen, scratch, roughen) | |
| steel(verb, support, close, set, fix) | |
| acclimatise | |
| calcify(verb, close, set, fix, settle) |
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| APA | Smart Define. (2015). toughen thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/toughen/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "toughen thesaurus" https://smartdefine.org/toughen/thesaurus/synonyms (accessed September 30, 2026). |
| Harvard | Smart Define 2015, toughen thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/toughen/thesaurus/synonyms>. |
| MLA | Smart Define. "toughen thesaurus" 13 April 2015. Web. 30 September 2026. <https://smartdefine.org/toughen/thesaurus/synonyms> |