2
succeed(verb, change, follow, alter, restore)
2
succor(verb, support, help, advance, develop)
2
supersede(verb, change, cover, follow, alter)
2
supplant(verb, change, cover, follow, alter)
2
swap places(expression, change, follow, alter, restore)
2
take out(expression, change, follow, alter, restore)
2
take over(verb, expression, change, cover, follow)
2
take over from(expression, idiom, change, follow, alter)
2
take part(expression, help, play, agree, aid)
2
underpin(strengthen, verify, substantiate, corroborate, buttress)
2
understudy
2
unite(verb, help, play, agree, aid)
2
upbear(verb, support, maintain, promote, encourage)
2
vindicate(verb, support, maintain, promote, encourage)
2
vote
2
vouch(support, verify, guarantee, substantiate, corroborate)
2
vouch for(verb, expression, phrasal verb, support, praise)
2
work side by side(expression, idiom, help, play, agree)
2
work together(expression, help, play, agree, aid)
1
accredit(verb, praise, approve, confirm, defend)
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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>