Synonyms|1.3kAntonyms|412|Broader|19Narrower|42Related|784

122 entries under harden topic. ×

0
mold(verb, set)
0
toughen up(verb, expression, set)
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APASmart Define. (2016). strengthen thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/strengthen/thesaurus/synonyms
ChicagoSmart Define. 2016. "strengthen thesaurus" https://smartdefine.org/strengthen/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2016, strengthen thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/strengthen/thesaurus/synonyms>.
MLASmart Define. "strengthen thesaurus" 3 March 2016. Web. 1 October 2026. <https://smartdefine.org/strengthen/thesaurus/synonyms>