Darth/Legends

"The Darth title was more than just a symbol of power; it was a claim of supremacy. It was used by those Dark Lords who have sought to enforce their will on the other Masters. It was a challenge - a warning to bow down or be destroyed."

- Kas'im

Darth was a title given to certain Sith Lords which preceded either their chosen Sith name, or (in some cases) their birth name.

Theoretical origins
"Henceforth, you shall be known as Darth&hellip;Vader."

- Palpatine to Anakin Skywalker

Many Sith Lords chose to add "Darth" to their name, so much so that the word is considered synonymous with the dark side of the Force in some circles. But the origins of the word are uncertain. It is often thought that "Darth" is merely a contraction of the title "Dark Lord of the Sith," but there are theories that suggest an even deeper interpretation.

The possibility of Rakatan origin
Because the first recorded Sith to use the title were Darth Revan and Darth Malak, the fact that they derived much of their power from the Star Forge, a creation of the Rakata, has led some historians to suggest that "Darth" is actually a corruption of the Rakatan word Daritha, meaning "emperor." Others note another Rakatan connection: the words for "triumph" or "conquest" in Rakatan is darr, and the word for "death" is tah, leading to the theory that "Darth" is derived from darr tah and therefore means "triumph over death" or "immortal." Given the obsession of the Sith with discovering the means to live forever, this idea, on the surface, is not entirely without merit. But others point out that the true meaning of darr tah is "conquest through death," meaning the conquest of one's enemies.

Ultimately, the flaw in such theories involving a Rakatan origin is that, even if they are accurate, they cannot spring specifically from Revan or Malak's own connection to the Star Forge. A decade prior to their emergence as Sith Lords (3964 BBY), the title "Darth" was already well known by the Jedi in connection to the Sith, which is why Padawan Zayne Carrick could call Jarael "Darth Sunshine." There is still the possibility that one of the Rakatan theories could be correct, since the ancient Sith homeworld of Korriban had once been occupied by the Rakata (circa 28,000 BBY), which is one way either the Daritha or darr tah term could have entered the ancient Sith language. But even if the Rakatan connection proves to have some validity, numerous other cultures make similar claims to the etymology of the title, so for the present, there is no definitive answer as to what the term "Darth" truly means.

Some have speculated that the style of armor worn by Darth Andeddu suggests that the title may date back as far as the days of the Old Sith Empire (6,900 BBY to 5,000 BBY). However, very little has been verified about the life of Darth Andeddu, and his dates of birth and death are, as yet, unknown. As such any assertion about the history of the "Darth"-title based on presumptions about Andeddu's use of the title must be considered speculative at this point in time.

Usage of the term
"Someone here once told me that the Darth title was no longer used because it promoted rivalry among the Sith. It gave the Jedi an easy target. It was easier just to abandon the custom. To have all the Sith Masters use the same title of Dark Lord. But I know the truth, Qordis. I know why none of you claims the that name for yourself. Fear. You're cowards. None of the Brotherhood is worthy of the Darth title. Least of all you."

- Darth Bane The earliest verified use of the title was by the master and apprentice duo of Darth Revan and Darth Malak, after the Mandalorian War and during the Jedi Civil War. It is worth noting that Revan and Malak used the title along with their given names, and did not adopt new names along with the title as many subsequent Sith Lords would do. Darth Traya was the first known Sith Lord to take an alias after her fall and rechristenment. Later Sith Lords of the Jedi Civil War era also used the title Darth, as did the founding Sith Lord of the Light and Darkness War, Darth Ruin, though there were few later Sith bearing the title until the rise of Darth Rivan and Darth Bane. During the Draggulch Period, Lord Kaan discouraged the usage of the term within the Brotherhood of the Sith, claiming that it promoted rivalry among the Sith. Darth Bane, believing that the reason was merely fear, revived the use of the title in the last days of the Brotherhood. Bane, as the only survivor of the Sith Order after the Seventh Battle of Ruusan, was largely able to reshape the Sith in his own image, instituting such reforms as the Rule of Two, and most (possibly all) of the Sith of his lineage adopted the Darth title as he did, generally coupling it with a new Sith name (e.g. Sidious, Tyranus, Vader), which appears to have been chosen for the apprentice by the master at the time the apprentice swore allegiance to the Sith.

Jedi Civil War and aftermath

 * Darth Revan
 * Darth Malak
 * Darth Bandon
 * Darth Traya
 * Darth Nihilus
 * Darth Sion
 * Unknown Darth

New Sith Wars

 * Darth Ruin
 * Darth Rivan
 * Darth Bane

Darth Bane's reformed Order

 * Darth Bane
 * Darth Zannah
 * Darth Cognus
 * Darth Millennial
 * Darth Vectivus
 * Darth Plagueis
 * Darth Sidious
 * Darth Maul
 * Darth Tyranus
 * Darth Vader

Legacy era Sith

 * Darth Krayt
 * Darth Maladi
 * Darth Maleval
 * Darth Nihl
 * Darth Ruyn
 * Darth Stryfe
 * Darth Talon
 * Darth Wyyrlok

Unknown

 * Darth Andeddu
 * Darth Desolous
 * Darth Karnage
 * Darth Kruhl
 * Darth Tenebrous

Behind the scenes
Darth is often thought to be a combination of letters from the title Dark Lord of the Sith, but there is no basis in Star Wars canon for this. Darth may also be a portmanteau of dark and death.

As a result of the popularity of Star Wars, the term 'Darth' has entered the popular lexicon as a term for evil. Most references are still associated with the Star Wars universe.

Since Revan and Malak were the first Sith Lords to use the 'Darth title' but chose to use there own names instead of choosing new ones, Darth Bandon may be the first Sith Lord to choose a new name for himself.

In A New Hope, Obi-Wan addresses Darth Vader simply as Darth, which is the only instance in the films where the word is used isolated. It is possible that at this point in the development of the saga "Darth" was intended to be the character's name, not a title, or that Obi-Wan was deliberately emphasising the title as a way of taunting Vader and driving home what he had become.

Contrary to popular belief, the word Darth is neither a Dutch nor a German word meaning dark (donker and dunkel, respectively). However, George Lucas did intend for viewers to subconsciously relate the word to this concept. In fact, many of the Imperial villains in Star Wars have Dutch-sounding names. Darth Vader, the first Sith introduced in the Original trilogy, could be roughly translated as Dark Father (Vader is, in fact, the Dutch word for father), which defines his character (note that in French, for instance, Darth Vader is plainly named Dark Vador, and in Italian, is named Dart Fener). More specifically, packaging on Dutch figurines of Darth Vader name him Dark Father.

Right now, fans are helping Del Rey create a new Sith name for Jacen Solo.