- Definitions|1
- Thesaurus|185
- Abbreviations|0
| heat up(verb, severe, exercise, strengthen) | |
| heighten(verb, severe, exercise, strengthen) | |
| hold to(expression, compensate, countercheck, overcompensate) | |
| holding to(expression, compensate, countercheck, overcompensate) | |
| incrassate | |
| increase(verb, severe, exercise, strengthen) | |
| inspissate | |
| instal | |
| install | |
| institute | |
| intensate(verb, severe, exercise, strengthen) | |
| inure(strengthen, harden) | |
| invigorate(strengthen, fortify) | |
| jell | |
| keep the faith(expression, idiom, compensate, countercheck, overcompensate) | |
| keeping the faith(expression, idiom, compensate, countercheck, overcompensate) | |
| lighten(verb, severe, exercise, strengthen) | |
| made good(expression, compensate, countercheck, overcompensate) | |
| magnify(verb, severe, exercise, strengthen) | |
| make amends(expression, compensate, countercheck, overcompensate) |
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| APA | Smart Define. (2015). firm up thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/firm_up/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "firm up thesaurus" https://smartdefine.org/firm_up/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, firm up thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/firm_up/thesaurus/synonyms>. |
| MLA | Smart Define. "firm up thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/firm_up/thesaurus/synonyms> |