When it comes to presenting information, many people prefer to use terms that indicate credibility. One common phrase to describe information that is highly reliable is "based on hard facts." However, there are many synonyms for this phrase that can be used to sound more sophisticated or varied in your writing. For example, you might say that the information is "grounded in empirical evidence" or "founded on concrete data." Other alternatives include "supported by incontrovertible proof," "backed by verifiable sources," and "validated by scientific research." By using these types of phrases, you can help emphasize the reliable nature of your information and improve your credibility as a writer.