Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- adj. Being the only example of its kind; unique: "sui generis works like Mary Chesnut's Civil War diary” ( Linda Orr).
Century Dictionary and Cyclopedia
- Of his, her, its, or their own or peculiar kind; singular.
Wiktionary
- adj. In a class of its own; one of a kind.
- adj. rarer By itself; of its own.
GNU Webster's 1913
- Of his or its own kind.
WordNet 3.0
- adj. constituting a class of its own; unique.
Etymologies
- Borrowed from Latin. From suī (“of its own”) + generis, the genitive of genus (“kind”). Literally meaning “of its own kind”. (Wiktionary)
- Latin suī generis : suī, of its own + generis, genitive of genus, kind. (American Heritage® Dictionary of the English Language, Fourth Edition)
Examples
“For three weeks of brilliant performance he is the character sui generis of Lee's army.”
Lists
These user-created lists contain the word ‘sui generis’.
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Logolepsy
"Luciferous Logolepsy is a collection of over 9,000 obscure English words. Though the definition of an 'English' word might seem to be straightforward, it is not. There exist so many adopted, deriv...
Anschauung, Areopagus, Argus, Briarean, Dei gratia, Dei judicium, Deo volente, Duecento, Foehn, Geflugelte Worte, Gegenschein, Hakenkreuz and 9230 more...
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cicatrix
scar tissue
minatory, naira, Cluniac, embracive, prolix, hierophant, timorous, adduce, veracious, dysphoric, sang-froid, vitiate and 503 more...
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Latin
tempus fugit, ad absurdum, ad hominem, ad infinitum, ad nauseam, deus ex machina, in absentia, in loco parentis, in vino veritas, ipso facto, mea culpa, memento mori and 36 more...
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words+phrases that make great literar...
rara avis, houri, sui generis, harry hirsute, semper dolores, bill posters, propterea quod, una tantum, rex begonia, ile dudiable, esme squalor, pussy galore and 18 more...
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Law School Terminology
Words that I'm learning in law school
pro tanto, obiter dictum, ratio decidendi, ex facie, ab initio, per saltum, assumpsit, escheat, mandamus, seisin, easement, estoppel and 40 more...
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Literary critical terms
cathexis, catachresis, polyvocal, alterity, liminality, liminal, limn, erasure, metonymic, intertextual, intrapoetic, contradistinction and 66 more...
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known words
words wot i already knew
antisyzygy, calenture, shill, saudade, sehnsucht, squonk, steganographic, anomie, wiggy, grok, hermeneutics, agrise and 206 more...
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i heart words
autarkic, cline, aver, limn, gossamer, ochre, fulminate, twee, augur, mollify, maw, ecumenical and 113 more...
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word list!!!!
lagniappe
syzygy, bloviate, lagniappe, laconic, condign, umbrage, susurrus, thaumaturgy, capacious, capitulate, glower, repast and 179 more...
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ADW1
obdurate, obstinate, behest, injunction, enjoin, circumspect, ensconce, discursive, lugubrious, doleful, somber, ken and 2476 more...
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Spe Salvi
parousia, hypomone, caritas, sui generis, tacuinum sanitatis, cacoethes scribendi
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traipsin' 'long through dis 'ear book...
Words which are either entirely new to me or;
Words which I comprehend generally but would prefer a more precise definition.
venality, seigneurial, mendicant, perforce, manse, glebe, trenchant, saw, obstreperous, profligate, dissipation, galliard and 176 more...
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SCRUBJAYS IDIOM
EXTRAPOLATE, altruistic, misanthropic, predicate, pejoritive, disparaging, bucolic, sylvan, veracity, autodidact, jejune, erudite and 110 more...
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The Collection
A somewhat discriminatory list of words and phrases collected for their euphonic or arcane appeal, interesting etymology, or concise definition of an otherwise unnamed phenomenon or concept.
ziggurat, neophilia, sucker punch, soporific, epoch, tundra, fiat, idiotproof, miscellany, metaphysics, cryptozoology, dysphoria and 850 more...
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my words
interminable, effete, convocation, philistines, malaise, foibles, deputation, anathematized, morass, stalwart, proselytize, abet and 405 more...
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lanklenmot's Words
ineluctable, prelapsarian, bien pensant, prospero, preternatural, gratifying, iconoclast, cineast, persnickety, tumescent, galvanize, pap and 887 more...
Tweets
Looking for tweets for sui generis.

charlesferdinand The fact that St. Thomas Aquinas considers angels to be sui generis is a consequence of imperfections in his ontology. Refute. Aug 4, 2009
bilby "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'. Jul 31, 2009
cxkang Dictionary.com:
Latin.
of his, her, its, or their own kind; unique. Jun 18, 2009
annajane 1 of a kind May 26, 2009
renbaudus http://en.wikipedia.org/wiki/Sui_generis sui generis Dec 5, 2008