Definition of per incuriam in English:

per incuriam

adverb & adjective

  • Through or characterized by lack of due regard to the law or the facts.

    as adverb ‘the decision was made per incuriam’
    • ‘He said that the Divisional Court had acted per incuriam.’
    • ‘If I am satisfied that the decision was made per incuriam, beyond reasonable doubt, I will overrule.’
    • ‘Your Honour, I did not want to suggest it was per incuriam.’
    • ‘We do not think that it would be right to say that there may not be other cases of decisions given per incuriam in which this court might properly consider itself entitled not to follow an earlier decision of its own.’
    • ‘But it also re-addressed the problem which had arisen from the office's administrative error, and concluded that its own decision on 14th September had been per incuriam.’


Latin, literally ‘through lack of care’.


per incuriam

/ˌpə(r) ɪnˈkjʊərɪam/