res ipsa loquitur[ip′sə läk′wə tər]
the thing speaks for itself
Origin of res ipsa loquiturClassical Latin
res ipsa loquitur
From the Latin phrase rēs ipsa loquitur (“the thing speaks for itself”).
res ipsa loquitur - Legal Definition
The thing speaks for itself. An evidentiary rule in torts that the very fact that an accident occurred is enough to provide a prima facie case of negligent behavior. Rear-ending another automobile is an example, showing failure to maintain a safe distance on the part of the rear-ender.