Sui generis
WordNet
adjective
(1) Constituting a class of its own; unique
"A history book sui generis"
"Sui generis works like Mary Chestnut's Civil War diary"
WiktionaryText
Etymology
Borrowed from . From suī (“of its own”) + generis, the of genus (“kind”). Literally meaning “of its own kind”.
Adjective
- In a class of its own; one of a kind.
- Anyone who considers the Femmes sui generis has never listened to the Velvets.
- 1995, How To Do Things With Words, by J.L. Austin
- We see him as he sees himself, surveying the invisible depths of ethical space, with all the distinction of a specialist in the sui generis.
- By itself; of its own.
- It is nothing to worry about sui generis, but in context of the other factors it's alarming indeed.