3
abandon(verb, move, retreat, reverse, recoil)
3
answer for(verb, expression, exchange, switch, replace)
3
approve(verb, support, help, develop, praise)
3
assist(verb, support, help, advance, develop)
3
attest(verb, support, praise, approve, confirm)
3
back away(expression, retreat, recoil, recede)
3
bolster(verb, support, increase, develop, maintain)
3
change(verb, cover, follow, alter, restore)
3
clog
3
document(verb, verify, substantiate, validate)
3
ebb(verb, retreat, recoil, recede)
3
encourage(verb, support, help, advance, develop)
3
front for(expression, change, follow, alter, restore)
3
further(verb, support, help, advance, develop)
3
go back(verb, expression, upset, turn, shift)
3
guarantee(verb, support, maintain, praise, favor)
3
help(verb, support, advance, maintain, promote)
3
lend support(verb, expression, support, advance, promote)
3
ratify(verb, support, praise, favor, back)
3
recede(verb, withdraw, return, retreat, reverse)
11 years ago|7.2k views|share |citing 
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>