sui generis

sui ge·ner·is

adjective \ˌsü-ˌī-ˈje-nə-rəs; ˌsü-ē-ˈje-, -ˈge-\

: in a class or group of its own : not like anything else

Full Definition of SUI GENERIS

:  constituting a class alone :  unique, peculiar

Examples of SUI GENERIS

  1. <among history's greats Leonardo da Vinci is often considered sui generis—a man of such stupendous genius that the world may never see his like again>


Latin, of its own kind
First Known Use: 1754


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