Sui generis
A similar case that led to the use of the label "sui generis" is the relationship of New Caledonia relative to France, because the legal status of New Caledonia can aptly be said to lie somewhere between a French overseas collectivity and a sovereign nation. Although other examples of such status for other dependent or disputed territories may exist, this arrangement is unique within the French realm.
Sicaricon (Jewish law)
The origin of the word "sicaricon" (or "saqrīqūn") is now obscure. The word is believed by some to be a corruption of the Greek word χαισαρίχιον, or what is called in Latin "caesaricium". Others, namely, Heinrich Graetz and M.S. Zuckermandel, think the word to be derived from "Sicarii", a group associated with murders, brigandage and robbery during the Second Temple period. Largely mentioned in regard to assassinations, there is no historical evidence, however, to connect the "Sicarii" with the expropriation of land. The author of "Sefer Arukh" brings down a different interpretation, saying that the word is merely an acronym for: שא קרקעי והניחני (= "Take my land, but leave me alone"), a view supported by Talmudic exegetes, Rashi and Solomon Sirilio. In any case, the word unanimously refers to a Roman or foreign molester who expropriates land from its Jewish owner, usually by a decree made by a tyrant king (Caesar).