Synonyms|217Antonyms|92|Broader|8Narrower|0Related|45

50 entries under harden topic. ×

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beef up(expression, strengthen)
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build up(expression, strengthen, toughen, roughen)
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desensitize(verb, toughen)
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familiarise(verb, fit, prepare, alter, endure)
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firm up(expression, strengthen)
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fortify(close, set, fix, firm, strengthen)
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make difficult(expression, strengthen)
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make ready(verb, expression, toughen)
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reinforce(close, set, fix, firm, strengthen)
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shore up(expression, strengthen)
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APASmart Define. (2015). acclimate thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/acclimate/thesaurus/synonyms
ChicagoSmart Define. 2015. "acclimate thesaurus" https://smartdefine.org/acclimate/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, acclimate thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/acclimate/thesaurus/synonyms>.
MLASmart Define. "acclimate thesaurus" 13 April 2015. Web. 29 September 2026. <https://smartdefine.org/acclimate/thesaurus/synonyms>