Definition of sui generis in US English:

sui generis


  • Unique.

    ‘the sui generis nature of animals’
    • ‘Our fingerprints and faces tell us we are each ‘sui generis,’ although most of us were raised to conform to, and fit into, a social structure, rather than being encouraged to discover and display our distinctive gifts.’
    • ‘It prescribed a new status for New Caledonia, which is today a sui generis Collectivity and no longer a Territory.’
    • ‘Nonetheless, these concerns continue to animate opposition to the concept of sui generis protection.’
    • ‘The danger, however, is that the new sui generis right might monopolise information beyond the term granted to copyright.’
    distinctive, individual, special, especial, idiosyncratic, quirky, eccentric, isolated
    View synonyms


Latin, literally ‘of its own kind’.


sui generis

/ˌso͞oˌī ˈjenərəs/