3
reinforce(verb, support, develop, promote, favor)
3
remain
3
shift(verb, upset, change, back, follow)
3
side with(verb, expression, support, help, develop)
3
stand in for(verb, expression, idiom, exchange, switch)
3
stick up for(verb, expression, idiom, support, help)
3
strengthen(verb, support, increase, develop, promote)
3
underwrite(verb, support, praise, favor, back)
2
abet(verb, support, help, develop, promote)
2
act for(expression, exchange, switch, replace, swap)
2
advocate(verb, support, help, develop, maintain)
2
agree(verb, help, play, aid, unite)
2
aid(verb, support, help, advance, develop)
2
alter(verb, change, follow, restore, supply)
2
backpedal(verb, upset, turn, back, return)
2
band(verb, help, play, agree, aid)
2
be in cahoots(verb, help, play, agree, aid)
2
bear
2
befriend(verb, support, help, develop, maintain)
2
boost(verb, support, help, advance, increase)
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APASmart Define. (2015). back up thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/back_up/thesaurus/synonyms
ChicagoSmart Define. 2015. "back up thesaurus" https://smartdefine.org/back_up/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, back up thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/back_up/thesaurus/synonyms>.
MLASmart Define. "back up thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/back_up/thesaurus/synonyms>