Dictionary.com
Thesaurus.com

sith

American  
[sith] / sɪθ /

adverb

Archaic.
  1. since.


sith British  
/ sɪθ /

adverb

  1. an archaic word for since

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of sith

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

He was an uncredited writer on "Indiana Jones and the Last Crusade", "Star Wars: Episode III -- Revenge of the Sith" and Tim Burton's "Sleepy Hollow".

From Barron's

Autumn is always the Sith—and I’m the hapless Jedi trying to stop her rise to power.

From Literature

So it’s no surprise that a number of shorts in “Star Wars: Visions” Volume 3 leaned into stories involving Jedi and/or the Sith, including “The Duel: Payback,” “The Lost Ones” and “The Bird of Paradise.”

From Los Angeles Times

Earlier this year, the 20th anniversary screening of “Star Wars: Episode III — Revenge of the Sith” also ranked second with $25 million for its opening weekend, under Ryan Coogler’s “Sinners.”

From Los Angeles Times

Proof this guy is full of SITH.

From Los Angeles Times