160 entries under verb topic. ×

11
ossify(close, set, fix, hard)
9
petrify(close, set, fix, hard)
8
harden(close, set, settle, firm)
8
indurate(close, set, fix, settle)
6
fossilise
5
calcify(close, set, fix, settle)
5
fix(close, set, settle, firm)
4
cake(close, set, fix, settle)
4
shrivel(contract, shrink, wither, fossilized)
3
anneal(close, set, fix, settle)
3
callous(close, set, fix, settle)
3
concrete(close, set, firm, dry)
3
fossilized(close, set, fix, firm)
3
temper(close, set, fix, settle)
3
toughen(close, set, fix, settle)
3
vitrify(close, set, fix, settle)
2
amalgamate(close, set, fix, settle)
2
bake(close, set, fix, settle)
2
brace(close, set, fix, settle)
2
buttress(close, set, fix, settle)
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APASmart Define. (2015). fossilize thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/fossilize/thesaurus/synonyms
ChicagoSmart Define. 2015. "fossilize thesaurus" https://smartdefine.org/fossilize/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, fossilize thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/fossilize/thesaurus/synonyms>.
MLASmart Define. "fossilize thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/fossilize/thesaurus/synonyms>