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Definitions

collateral

[kuh-lat-er-uhl] / kəˈlæt ər əl /
ADJECTIVE
indirect, secondary
Synonyms
STRONGEST
ancillary
STRONG
accessory adjuvant attendant auxiliary complementary concomitant coordinate dependent incident lateral parallel roundabout satellite side sub subordinate subsidiary supporting tributary
WEAK
accompanying added adjunctive appurtenant circuitous coincident concurrent confirmatory corresponding corroborative not lineal related subservient under
Antonyms
STRONG
chief different dissimilar important independent major necessary unrelated
WEAK
direct main primary principal
NOUN
monetary deposit
Synonyms
STRONG
assurance bond endorsement guarantee pledge promise security surety warrant wealth
Antonyms
STRONG
break uncertainty

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

For example, they lend against only a portion of the value of the collateral.

From The Wall Street Journal • Apr. 1, 2026

That would split the stadium from the club, and as Old Trafford is used as collateral for the current long-standing debt, how that would work is not clear either.

From BBC • Mar. 24, 2026

They track trades and provide a defined set of rules, such as what kind of collateral contract holders need to put up and how frequently portfolios needed to be marked to market.

From Barron's • Mar. 24, 2026

Investors can place trades on the Hyperliquid decentralized exchange, using cryptocurrency as collateral.

From MarketWatch • Mar. 20, 2026

The CDO manager’s job was to select the Wall Street firm to supply him with subprime bonds that served as the collateral for CDO investors, and then to vet the bonds themselves.

From "The Big Short" by Michael Lewis

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.