Synonyms|270Antonyms|105|Broader|3Narrower|13Related|183

76 entries under harden topic. ×

3
consolidate(verb, support, close, set, fix)
3
discipline(verb, rough, prepare, scratch)
3
fossilize(verb, close, set, fix, settle)
3
gird(verb, support, close, set, fix)
3
nerve(verb, close, set, fix, settle)
3
ossify(verb, close, set, fix, settle)
3
petrify(verb, close, set, fix, settle)
3
vitrify(verb, close, set, fix, settle)
2
amalgamate(verb, close, set, fix, settle)
2
bake(verb, close, set, fix, settle)
2
beef up(verb, expression, phrasal verb, support, increase)
2
cement(verb, close, set, fix, settle)
2
close(verb, set, fix, settle, firm)
2
concrete(verb, close, set, firm, dry)
2
congeal(verb, close, set, fix, settle)
2
contract(verb, close, set, fix, settle)
2
crystallize(verb, close, set, fix, settle)
2
densify(verb, close, set, fix, settle)
2
firm(verb, close, set, fix, settle)
2
fix(verb, close, set, settle, firm)
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ChicagoSmart Define. 2015. "toughen thesaurus" https://smartdefine.org/toughen/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2015, toughen thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/toughen/thesaurus/synonyms>.
MLASmart Define. "toughen thesaurus" 13 April 2015. Web. 1 October 2026. <https://smartdefine.org/toughen/thesaurus/synonyms>