73 entries under harden topic. ×

12
fossilize(verb, close, set, fix, hard)
11
ossify(verb, close, set, fix, hard)
10
solidify(verb, close, set, fix, hard)
9
benumb(verb, destroy, halt, shock, weaken)
9
freeze(verb, close, set, fix, destroy)
9
lapidify(verb, hard, solidify)
6
crystallize(verb, close, set, fix, settle)
6
indurate(verb, adjective, close, set, fix)
6
stiffen(verb, close, set, fix, settle)
5
chill(noun, verb, upset, set, worry)
5
clarify(verb, hard, solidify, ossify)
5
rigidify(verb, solidify)
5
temper(verb, close, set, fix, settle)
4
cake(verb, close, set, fix, settle)
4
calcify(verb, close, set, fix, hard)
4
congeal(verb, close, set, fix, settle)
4
set(verb, close, fix, hard, settle)
4
strengthen(verb, close, set, fix, settle)
4
turn to stone(verb, expression, idiom, hard)
4
vitrify(verb, close, set, fix, settle)
11 years ago|6.1k views|share |citing 
APASmart Define. (2015). petrify thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/petrify/thesaurus/synonyms
ChicagoSmart Define. 2015. "petrify thesaurus" https://smartdefine.org/petrify/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, petrify thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/petrify/thesaurus/synonyms>.
MLASmart Define. "petrify thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/petrify/thesaurus/synonyms>