Corroborative (adjective)

Serving to support or confirm a statement or fact.

Origin:

Late 16th century: from latin corroborat- "strengthened", from the verb corroborare, from cor- "together" + robur "strength".

Examples:

1. The witness's testimony provided corroborative evidence for the prosecution.
2. The report was corroborative of the findings of the previous study.
3. The new evidence was corroborative of the defendant's alibi.
4. The study provided corroborative evidence for the effectiveness of the treatment.
5. The new information was corroborative of the theory, supporting the hypothesis.