Grounds for belief is a term used to describe the reasons and EVIDENCE that support a particular opinion or belief. It is often used in legal contexts, where it refers to the facts and arguments that are presented in court to support a claim. The two crossword solutions for this term are REASONS (7 letters) and EVIDENCE (8 letters). Reasons refer to the logical explanations that are used to support a belief, while EVIDENCE refers to the tangible proof that can be used to back up a claim.