4
stick(verb, bear, experience, endure, feel)
4
submit(verb, support, hold, take, help)
4
submit to(verb, expression, go, accept, allow)
4
succor(verb, support, develop, maintain, promote)
4
suckle(verb, feed, nurture, serve, nurse)
4
take up with(verb, expression, idiom, support, help)
4
tend(verb, support, raise, aid, feed)
4
undergird(verb, hold, maintain, uphold, reinforce)
4
uplift(verb, support, maintain, promote, encourage)
4
wear(verb, hold, take, continue, follow)
3
accommodate(verb, support, help, give, keep)
3
afford(verb, support, help, give, keep)
3
agree(verb, verify, substantiate, validate)
3
allege in support(expression, idiom)
3
apply(verb, continue, stay, extend, last)
3
attend(verb, support, fix, back, aid)
3
avow
3
be exposed to(expression, idiom)
3
bear with(verb, expression, phrasal verb, support, hold)
3
begin
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APASmart Define. (2015). sustain thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/sustain/thesaurus/synonyms
ChicagoSmart Define. 2015. "sustain thesaurus" https://smartdefine.org/sustain/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, sustain thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/sustain/thesaurus/synonyms>.
MLASmart Define. "sustain thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/sustain/thesaurus/synonyms>