511 entries under support topic. ×

10
assist(verb, hold, help, increase)
10
brace(verb, hold, calm, take)
10
buttress(noun, verb, hold, calm)
10
encourage(verb, help, give, increase)
10
guard(verb, hold, fix, keep)
10
help(verb, hold, keep, maintain)
10
hold up(verb, expression, phrasal verb, hold)
10
save(verb, hold, keep, maintain)
9
put up with(verb, expression, idiom, phrasal verb)
8
allow(verb, hold, take, give)
8
back up(verb, expression, phrasal verb, increase)
8
brook(verb, hold, take, meet)
8
certify(verb, show, determine, favor)
8
extend(verb, advance, increase, maintain)
8
favor(verb, help, give, keep)
8
fortify(verb, hold, increase, develop)
8
keep going(verb, expression, idiom, move)
8
reinforce(verb, hold, help, increase)
8
sanction(verb, take, accept, develop)
8
shore up(verb, expression, phrasal verb, hold)
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APASmart Define. (2015). sustain thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/sustain/thesaurus/synonyms
ChicagoSmart Define. 2015. "sustain thesaurus" https://smartdefine.org/sustain/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, sustain thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/sustain/thesaurus/synonyms>.
MLASmart Define. "sustain thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/sustain/thesaurus/synonyms>