An authoritative report is a factual document that presents information that can be trusted. Synonyms for an authoritative report include a credible report, reliable report, trustworthy report, accurate report, and authentic report. An established report can also be used to describe a dependable and authoritative document. In the business world, a substantiated report or evidence-based report denotes that research has been done, and the report has been corroborated with evidence. A verifiable report is also considered trustworthy because it can be backed up with further verification if needed. In contrast, a biased report is one where the writer has a one-sided or prejudiced view, whereas a factual report is one that is based only on factual data and is free from any bias. Overall, an authoritative report is a vital tool in informing and guiding decision-making in various fields. It is essential to ensure that it is credible, reliable, trustworthy, authentic, and factual.