80 entries under strengthen topic. ×

1
underline(verb, support, increase, sustain, uphold)
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acclimate
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acclimatize
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anneal
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brutalize
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buck up(verb, expression, phrasal verb, support, help)
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climatize
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develop
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entrench(verb, support, secure, protect)
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firm up(expression, harden)
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garrisoned(verb, occupy, fortify, blinded)
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garrisoning(verb, occupy, fortify, blinded)
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inure
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jack up(verb, expression, support, fortify)
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jazz up(verb, expression, support, fortify)
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make difficult(expression, harden)
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make stronger(verb, expression, support, reinforce)
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protect(verb, support, secure, fortify)
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season
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step up(verb, expression, phrasal verb, support, secure)
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APASmart Define. (2015). shore up thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/shore_up/thesaurus/synonyms
ChicagoSmart Define. 2015. "shore up thesaurus" https://smartdefine.org/shore_up/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, shore up thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/shore_up/thesaurus/synonyms>.
MLASmart Define. "shore up thesaurus" 10 April 2015. Web. 30 September 2026. <https://smartdefine.org/shore_up/thesaurus/synonyms>