Example : Cousins are collateral relatives.
An indirect descendant of the Stuarts.

Synonyms : indirect

Example : Collateral evidence.

Synonyms : confirmative, confirmatory, confirming, corroborative, corroboratory, substantiating, substantiative, validating, validatory, verificatory, verifying

Example : Collateral ridges of mountains.

Example : An excessive growth of bureaucracy, with attendant problems.
Snags incidental to the changeover in management.
Attendant circumstances.
The period of tension and consequent need for military preparedness.
The ensuant response to his appeal.
The resultant savings were considerable.
Collateral target damage from a bombing run.

Synonyms : accompanying, attendant, concomitant, consequent, ensuant, incidental, resultant, sequent