223 entries under back topic. ×

5
promote(verb, support, hold, help, advance)
5
serve(verb, support, help, give, keep)
5
stay(verb, support, hold, help, advance)
4
boost(verb, support, hold, help, increase)
4
buoy up(verb, expression, phrasal verb, support, maintain)
4
produce(verb, support, give, keep, present)
4
raise(verb, support, increase, maintain, promote)
4
say in defense(verb, expression, idiom, support, maintain)
4
speak up for(verb, expression, idiom, support, maintain)
4
succor(verb, support, develop, maintain, promote)
4
uplift(verb, support, maintain, promote, encourage)
3
accommodate(verb, support, help, give, keep)
3
attend(verb, support, fix, aid)
3
exculpate(verb, support, maintain, favor)
3
facilitate(verb, support, help, benefit)
3
look after(verb, expression, phrasal verb, support, hold)
3
patronize(verb, support, help, maintain)
3
rear(verb, support, maintain, promote, encourage)
3
stiffen(verb, support, calm, fix, increase)
3
stimulate(verb, support, maintain, promote, raise)
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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>