A rule of evidence whereby the negligence of an alleged wrongdoer can be inferred from the fact that the accident happened WordNet 3.0 & Open English WordNet

Res ipsa loquitur is a doctrine in common law and Roman-Dutch law jurisdictions under which a court can infer negligence from the very nature of an accident or injury in the absence of direct evidence on how any defendant behaved in the context of tort litigation. Wikipedia

Legal term - Latin for "the thing speaks for itself" Wikidata