Synonyms|68Antonyms|2|Broader|0Narrower|6Related|6

44 entries under toughen topic. ×

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sustain(verb, powerful, fortify, brace, reinforce)
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temper(verb, powerful, fortify, brace, reinforce)
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tone up(verb, expression, powerful, fortify, brace)
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wax(verb, powerful, fortify, brace, reinforce)
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APASmart Define. (2015). make stronger thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/make_stronger/thesaurus/synonyms
ChicagoSmart Define. 2015. "make stronger thesaurus" https://smartdefine.org/make_stronger/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, make stronger thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/make_stronger/thesaurus/synonyms>.
MLASmart Define. "make stronger thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/make_stronger/thesaurus/synonyms>