107 entries under set topic. ×

2
steady(verb, calm, place, fix)
2
vitrify(verb, close, fix, settle)
1
acclimate(verb, dull, close, develop)
1
acclimatize(verb, dull, close, develop)
1
affix(verb, place, fix, secure)
1
amalgamate(verb, close, fix, settle)
1
anchor(verb, place, fix, secure)
1
anneal(verb, close, fix, settle)
1
attach(verb, place, fix, secure)
1
bake(verb, close, fix, settle)
1
bind(verb, place, fix, secure)
1
calcify(verb, close, fix, settle)
1
catch(verb, place, fix, secure)
1
clabber(swell, expand, freeze, thicken)
1
cohere(form, develop, firm, freeze)
1
compact(verb, close, fix, settle)
1
concrete(close, harden, thicken, coagulate)
1
connect(verb, place, fix, secure)
1
contract(verb, close, fix, settle)
1
couple(verb, place, fix, secure)
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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>