Sui Generis

Sui generis ( /ˌsuːaɪ ˈdʒɛnərɪs/; ) is an adjective borrowed from Latin, meaning "of its own kind/genus" or "unique in its characteristics".

The term is widely needed to support the more esoteric requirements of a number of disciplines including in philosophy when a concept is not available; in biology when a genus is not available; in law when a special and unique interpretation of a case or authority will be needed on-the-fly; in town-planning where there is no existing use-case; in intellectual property rights where there is no defining characteristic; and in politics and societal norms where there is no real authority perceived.

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Famous quotes related to sui generis:

    Moralistic is not moral. And as for truth—well, it’s like brown—it’s not in the spectrum.... Truth is sui generis.
    Iris Murdoch (b. 1919)