Definition of nonjoinder in English:

nonjoinder

noun

Law
  • The omission of a person who ought to be made a party to a lawsuit.

    negligence, neglect, neglectfulness, dereliction, forgetfulness, oversight, disregard, non-fulfilment, default, lapse, failure
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Pronunciation:

nonjoinder

/nɒnˈdʒɔɪndə/