I think Sith would be hard to stand in court as it was a term that existed before Star Wars.
Word History and Origins
Origin of sith1
First recorded before 950; Middle English; Old English siththa, dialectal variant of siththan, originally, sīth thām “after that, subsequently to that” (compare German seitdem “since, ever since”), equivalent to sīth “subsequently,” akin to Gothic seithus (adjective) “late,” Old Norse sīth (adverb) “late, in the evening,” German seit (preposition and conjunction) “since” + thām, dative of demonstrative pronoun, i.e., “to that”; the 1