7
persevere(verb, advance, keep, maintain, overcome)
7
protect(verb, support, hold, fix, keep)
7
protract(verb, support, keep, maintain, continue)
7
relieve(verb, support, help, keep, develop)
7
retain(verb, hold, keep, maintain, oppose)
7
stomach(verb, support, hold, take, meet)
7
subsist(verb, support, keep, maintain, overcome)
7
supply(verb, support, help, give, keep)
6
attest(verb, support, show, determine, praise)
6
authorize(verb, support, accept, praise, favor)
6
be subjected to(verb, expression, idiom, experience, suffer)
6
bear up under(verb, expression, idiom, phrasal verb, bear)
6
champion(verb, support, hold, help, maintain)
6
comfort(noun, verb, support, hold, help)
6
conserve(verb, hold, keep, maintain, oppose)
6
countenance(verb, support, hold, take, go)
6
entertain(verb, support, take, love, consider)
6
espouse(verb, support, hold, maintain, oppose)
6
go through
6
invigorate(verb, support, increase, encourage, strength)
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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>