4
appurtenant(adjective, lower, spare, subject, useful)
4
cognate(adjective, attendant, kindred, congeneric, consanguinity)
4
collateral security(expression, idiom)
4
contingent(adjective, inferior, insignificant, unimportant, minor)
4
contributory(adjective, help, low, subject, minor)
4
endorsement(noun, security, deposit, surety)
4
extra(adjective, spare, inferior, insignificant, relief)
4
gage(noun, agreement, contract, counter, assurance)
4
money(noun, substance, prize, property, store)
4
skirting(laterality, side-by-side)
4
supplemental(adjective, useful, minor, helpful, secondary)
4
supplementary(adjective, low, subject, useful, minor)
4
tributary(adjective, lower, low, inferior, subject)
4
verifying
4
warrant(noun, care, agreement, contract, counter)
3
accompanying(adjective, subordinate, contemporary, secondary, connected)
3
added(adjective, secondary, indirect, ancillary)
3
analogous(adjective, like, parallel, identical, alike)
3
complementary(adjective, like, spare, parallel, joint)
3
consanguineous(adjective, consanguinity)
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APASmart Define. (2015). collateral thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/collateral/thesaurus/synonyms
ChicagoSmart Define. 2015. "collateral thesaurus" https://smartdefine.org/collateral/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, collateral thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/collateral/thesaurus/synonyms>.
MLASmart Define. "collateral thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/collateral/thesaurus/synonyms>