Synonyms|108Antonyms|13|Broader|5Narrower|0Related|30
1
harden
1
invigorate
1
keep
1
keep afloat
1
keep from falling(verb, expression, idiom, support, hold)
1
lend support
1
nerve
1
pillow
1
poise(verb, hold, maintain, stay, bear)
1
probate
1
prove
1
ratify
1
refresh
1
reinvigorate
1
restrengthen
1
root
1
set on
1
stand(verb, hold, maintain, stay, bear)
1
steel
1
stiffen
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APASmart Define. (2015). undergird thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/undergird/thesaurus/synonyms
ChicagoSmart Define. 2015. "undergird thesaurus" https://smartdefine.org/undergird/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, undergird thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/undergird/thesaurus/synonyms>.
MLASmart Define. "undergird thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/undergird/thesaurus/synonyms>