Definition of res ipsa loquitur in English:

res ipsa loquitur


  • The principle that the mere occurrence of some types of accident is sufficient to imply negligence.

    • ‘Res ipsa loquitur does not excuse the finder of fact from determining "how the specific negligence occurred".’
    • ‘As to causation, the Judge decided that the maxim ‘res ipsa loquitur’ applied.’
    • ‘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

/ˌreɪz ˌɪpsə ˈlɒkwɪtə/