Sui generis
Sui generis (; ) is a Latin phrase that means "of its (his, her, their) own kind; in a class by itself; unique."
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).