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

76 entries under harden topic. ×

2
precipitate(verb, close, set, fix, settle)
2
press(verb, close, set, fix, settle)
2
set(verb, support, close, fix, settle)
2
settle(verb, close, set, fix, firm)
2
shore up(verb, expression, phrasal verb, support, increase)
2
solidify(verb, close, set, fix, settle)
2
starch(verb, close, set, fix, settle)
1
augment(verb, support, increase, boost, sustain)
1
brutalize(verb, strengthen, scratch, roughen)
1
build up(verb, expression, phrasal verb, support, increase)
1
cake(verb, close, set, fix, settle)
1
caseharden(verb, close, set, fix, continue)
1
climatize(verb, rough, prepare, adjust, strengthen)
1
clot(verb, close, set, fix, settle)
1
coagulate(verb, close, set, fix, settle)
1
compact(verb, close, set, fix, settle)
1
curdle(verb, close, set, fix, settle)
1
dry(verb, close, set, fix, settle)
1
freeze(verb, close, set, fix, settle)
1
habituate(verb, rough, prepare, adjust, scratch)
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APASmart Define. (2015). toughen thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/toughen/thesaurus/synonyms
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>