Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- adjective Being the only example of its kind; unique.
from The Century Dictionary.
- Of his, her, its, or their own or peculiar kind; singular.
from the GNU version of the Collaborative International Dictionary of English.
- Of his or its own kind.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective   In a class of its own; one of a kind .
- adjective rarer  By itself ; of its own.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adjective constituting a class of its own; unique
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
[Latin suī generis : suī, of its own + generis, genitive of genus, kind.]
 from Wiktionary, Creative Commons Attribution/Share-Alike License
Borrowed from Latin. From suī (“of its own”) + generis, the genitive of genus (“kind”). Literally meaning “of its own kind”.
			
		
	Support
 
				Help support Wordnik (and make this page ad-free) by adopting the word sui generis.
Examples
- 
								If, in reviews, Paul Morgan comes off as a showboater and Jim Javor seems like a modest Luddite, then Randy Bott, who has since fallen out of the top 25, is sui generis. NYT > Home Page By VIRGINIA HEFFERNAN 2010 
- 
								If, in reviews, Paul Morgan comes off as a showboater and Jim Javor seems like a modest Luddite, then Randy Bott, who has since fallen out of the top 25, is sui generis. NYT > Technology By VIRGINIA HEFFERNAN 2010 
renbaudus commented on the word sui generis
http://en.wikipedia.org/wiki/Sui_generis sui generis
December 5, 2008 
			
		
	
annajane commented on the word sui generis
1 of a kind
May 26, 2009 
			
		
	
cxkang commented on the word sui generis
Dictionary.com:
Latin.
of his, her, its, or their own kind; unique.
June 19, 2009 
			
		
	
bilby commented on the word sui generis
"William Randolph Hearst did not speak often of his father. He preferred to think of himself as sui generis and self-created, which in many ways he was."
- David Nasaw, 'The Chief'.
July 31, 2009 
			
		
	
charlesferdinand commented on the word sui generis
The fact that St. Thomas Aquinas considers angels to be sui generis is a consequence of imperfections in his ontology. Refute.
August 5, 2009 
			
		
	
arasbaras commented on the word sui generis
sem semelhanca com nenhum outro; unico no seu genero; original; peculiar; singular
February 18, 2016