1
authorize
1
autograph(verb, support, take, agree, sign)
1
aver(verb, support, maintain, secure, protect)
1
avert(verb, support, maintain, back, declare)
1
avow(verb, support, maintain, back, declare)
1
bankroll(verb, support, maintain, secure, protect)
1
be responsible for(verb, support, maintain, back, declare)
1
be surety for(verb, support, maintain, secure, protect)
1
bear testimony(verb, expression, support, maintain, back)
1
bind oneself(verb, expression, support, maintain, secure)
1
bless(verb, support, take, favor, agree)
1
boost(verb, support, take, favor, agree)
1
contend(verb, support, maintain, back, declare)
1
coordinate
1
corroborate(verb, support, maintain, back, declare)
1
cosponsor
1
countenance(verb, support, take, favor, agree)
1
declare(verb, support, maintain, back, confirm)
1
ditto(verb, support, take, favor, agree)
1
ensure(verb, support, maintain, secure, protect)
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APASmart Define. (2015). cosign thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/cosign/thesaurus/synonyms
ChicagoSmart Define. 2015. "cosign thesaurus" https://smartdefine.org/cosign/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, cosign thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/cosign/thesaurus/synonyms>.
MLASmart Define. "cosign thesaurus" 24 December 2015. Web. 22 September 2026. <https://smartdefine.org/cosign/thesaurus/synonyms>