104 entries under fortify topic. ×
| regenerate(verb, support, increase, establish, extend) | |
| rejuvenate(verb, support, increase, raise, establish) | |
| render solid(expression, develop, secure, join, strengthen) | |
| renew(verb, support, increase, raise, establish) | |
| rise(verb, form, support, set, increase) | |
| secure(verb, support, set, develop, settle) | |
| set up(verb, expression, phrasal verb, support, increase) | |
| sinew(verb, support, increase, establish, extend) | |
| slap on(expression, develop, secure, join, unite) | |
| stand up for(verb, expression, idiom, support, increase) | |
| step up(verb, expression, support, increase, establish) | |
| stroke(verb, support, increase, boost, sustain) | |
| substantiate(verb, support, increase, establish, extend) | |
| tack on(expression, develop, secure, join, unite) | |
| tag on(expression, develop, secure, join, unite) | |
| team up with(expression, idiom, develop, secure, join) | |
| throw in together(expression, idiom, develop, secure, join) | |
| tie up with(expression, idiom, develop, secure, join) | |
| tone up(verb, expression, support, increase, establish) | |
| underline(verb, support, increase, boost, sustain) |
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| APA | Smart Define. (2016). harden thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/harden/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "harden thesaurus" https://smartdefine.org/harden/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2016, harden thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/harden/thesaurus/synonyms>. |
| MLA | Smart Define. "harden thesaurus" 24 March 2016. Web. 29 September 2026. <https://smartdefine.org/harden/thesaurus/synonyms> |