1. serving to confirm or give support to something already stated or believed; providing corroboration
Usage: formal; often used in legal or academic contexts

Examples

• The witness provided corroboratory evidence that supported the defendant's alibi.
• The scientist's findings were corroboratory of the earlier hypothesis.
• The document served as corroboratory proof of the company's financial claims.
• Multiple corroboratory accounts from different sources strengthened the investigation.
• The expert's testimony was corroboratory of the plaintiff's version of events.
• Corroboratory data from independent studies confirmed the original results.