Synonyms|108Antonyms|13|Broader|5Narrower|0Related|30

10 entries under phrasal verb topic. ×

7
brace up(verb, expression)
3
hold up(verb, expression, hold, maintain)
3
shore up(verb, expression, support, hold)
2
back up(verb, expression)
2
bear out
2
beef up(verb, expression)
2
bolster up
2
keep up(verb, expression, hold, maintain)
0
approve of
0
bear witness to
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APASmart Define. (2015). undergird thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/undergird/thesaurus/synonyms
ChicagoSmart Define. 2015. "undergird thesaurus" https://smartdefine.org/undergird/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, undergird thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/undergird/thesaurus/synonyms>.
MLASmart Define. "undergird thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/undergird/thesaurus/synonyms>