Circumstantial evidence refers to information that suggests a fact or event is true but does not directly prove it. For example, if a person is seen leaving a crime scene and later found with a stolen item, this evidence implies their involvement, but it does not confirm it outright. This type of evidence relies on inference rather than direct observation. In legal contexts, circumstantial evidence can be powerful when combined with other evidence, as it helps build a broader picture of what may have occurred, even if it does not provide definitive proof on its own.