Definition of res ipsa loquitur in English:

res ipsa loquitur

Pronunciation: /ˈlōkwəˌto͝or//ˌrās/


  • The principle that the occurrence of an accident implies negligence.

    • ‘As to causation, the Judge decided that the maxim ‘res ipsa loquitur’ applied.’
    • ‘Res ipsa loquitur does not excuse the finder of fact from determining "how the specific negligence occurred".’
    • ‘A claim of res ipsa loquitur will usually not succeed, or indeed be necessary, if there is any actual evidence about how the loss or injury was sustained.’


Latin, literally the matter speaks for itself.


res ipsa loquitur