Veridical describes something that's true. When you're talking to your friend who's prone to exaggeration, it's hard to tell what's veridical and what's just made up.
Using the adjective veridical is a formal way to describe things that are accurate or based in reality. Sworn testimony in a courtroom is expected to be veridical, as is the information you learn in a history class in school. Sometimes predictions or dreams that appear to foretell the future are also described as veridical. The Latin root word veridicus merges verus "true" with dicere "to speak."