91 entries under support topic. ×

12
guarantee(verb, help, promote, praise)
11
attest(verb, show, maintain, praise)
10
certify(verb, show, maintain, praise)
7
promise(verb, maintain, secure, approve)
6
assure(verb, maintain, secure, approve)
6
endorse(verb, maintain, praise, secure)
5
authenticate(verb, show, praise, favor)
5
aver(verb, show, maintain, secure)
5
confirm(verb, show, maintain, praise)
5
pledge(verb, maintain, secure, approve)
4
affirm(verb, show, maintain, praise)
4
recommend(verb, praise, favor, back)
4
swear(verb, show, maintain, secure)
4
warrant(verb, show, maintain, praise)
3
accredit(verb, control, praise, favor)
3
back(verb, help, maintain, promote)
3
stand behind(verb, expression, maintain, praise)
3
vouch(verb, guarantee)
2
back up(verb, expression, phrasal verb, praise)
2
ensure(verb, maintain, secure, approve)
11 years ago|2.7k views|share |citing 
APASmart Define. (2015). vouch for thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/vouch_for/thesaurus/synonyms
ChicagoSmart Define. 2015. "vouch for thesaurus" https://smartdefine.org/vouch_for/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, vouch for thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/vouch_for/thesaurus/synonyms>.
MLASmart Define. "vouch for thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/vouch_for/thesaurus/synonyms>