2. (adj)collateral, indirect descended from a commonancestor but through different lines "cousins are collateral relatives"; "an indirect descendant of the Stuarts"
3. (adj)collateral, confirmative, confirming, confirmatory, corroborative, corroboratory, substantiating, substantiative, validating, validatory, verificatory, verifying serving to support or corroborate "collateral evidence"
4. (adj)collateral accompany, concomitant "collateral target damage from a bombing run"
5. (adj)collateral situated or runningside by side "collateral ridges of mountains"
3. (adj)Collateral related to, but not strictly a part of, the mainthing or matter under consideration; hence, subordinate; not chief or principal; as, collateral interest; collateral issues