53 entries under expression topic. ×

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lie beneath(verb, underlie)
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pick up(strengthen, buttress)
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plump for(verb, phrasal verb)
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plunk for(verb, phrasal verb)
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punch up(strengthen, buttress)
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put up(verb, phrasal verb)
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remain true(verb, continue, stay, extend)
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soup up(strengthen, buttress)
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stand up(verb, continue, stay, extend)
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stand up for(idiom, strengthen, buttress)
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stay staunch(verb, continue, stay, extend)
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stretch out(verb, continue, stay, extend)
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support from beneath
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APASmart Define. (2015). underpin thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/underpin/thesaurus/synonyms
ChicagoSmart Define. 2015. "underpin thesaurus" https://smartdefine.org/underpin/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, underpin thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/underpin/thesaurus/synonyms>.
MLASmart Define. "underpin thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/underpin/thesaurus/synonyms>