90 entries under thicken topic. ×
| prop(noun, verb, support, calm, fix) | |
| steel(verb, dull, close, set, fix) | |
| inspissate(verb, swell, expand, condense, harden) | |
| benumb(verb, freeze, bite, chill, harden) | |
| cement(verb, close, place, set, fix) | |
| gel(verb, form, set, fix, develop) | |
| petrify(verb, close, set, fix, settle) | |
| starch(verb, close, set, fix, settle) | |
| callous(verb, dull, close, set, fix) | |
| candy(verb, harden, jellied, solidify) | |
| chill(verb, set, freeze, harden) | |
| condense(verb, form, set, fix, develop) | |
| curdle(verb, close, set, fix, settle) | |
| increase(verb, support, sustain, uphold, strengthen) | |
| numb(verb, dull, develop, rough, adjust) | |
| precipitate(verb, close, set, fix, settle) | |
| stabilize(verb, calm, place, set, fix) | |
| steady(verb, calm, place, set, fix) | |
| acclimate(verb, dull, close, set, develop) | |
| acclimatize(verb, dull, close, set, develop) |
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| APA | Smart Define. (2015). stiffen thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/stiffen/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "stiffen thesaurus" https://smartdefine.org/stiffen/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, stiffen thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/stiffen/thesaurus/synonyms>. |
| MLA | Smart Define. "stiffen thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/stiffen/thesaurus/synonyms> |