79 entries under fix topic. ×

21
set(verb, form, support, calm, close)
20
solidify(verb, form, close, place, set)
17
congeal(verb, form, close, place, set)
15
thicken(verb, form, close, place, set)
13
jell(verb, close, set, settle)
10
freeze(verb, form, calm, close, set)
10
strengthen(verb, support, dull, close, set)
10
brace(noun, verb, calm, close, set)
10
fortify(verb, support, close, set)
9
coagulate(verb, form, close, set)
9
reinforce(verb, support, close, set)
9
toughen(verb, support, close, set)
7
clot(verb, form, close, set)
7
firm(verb, calm, close, set)
6
cake(verb, close, set, settle)
5
crystallize(verb, form, close, set)
5
indurate(verb, dull, close, set)
5
ossify(verb, calm, close, set)
5
prop(noun, verb, support, calm)
5
steel(verb, dull, close, set)
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APASmart Define. (2015). stiffen thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/stiffen/thesaurus/synonyms
ChicagoSmart Define. 2015. "stiffen thesaurus" https://smartdefine.org/stiffen/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, stiffen thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/stiffen/thesaurus/synonyms>.
MLASmart Define. "stiffen thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/stiffen/thesaurus/synonyms>