sui generis

Sui Generis

[Latin, Of its own kind or class.] That which is the only one of its kind.

sui generis

(sooh-ee jen-ur-iss) n. Latin for one of a kind, unique.

sui generis

noun in its own category, in its own group, of its own character, of its own class, of its own classification, of its own denomination, of its own desiggation, of its own genre, of its own kind, of its own nature, of its own type, of its own variety, peculiar, special, the only one of its kind, unique

sui generis

‘of its own kind’.