'Sui generis' definitions:

Definition of 'sui generis'

From: WordNet
adjective
Constituting a class of its own; unique; "a history book sui generis"; "sui generis works like Mary Chestnut's Civil War diary"

Definition of 'Sui generis'

From: GCIDE
  • Sui generis \Su"i gen"e*ris\ [L.] Of his or its own kind. [1913 Webster]

Synonyms of 'sui generis'

From: Moby Thesaurus