Stang

Introduced as an Alderaanian curse in the very first Star Wars expanded universe novel. One of the earliest attempts to create Star Wars-specific profanity.

First appeared in 1978, making it one of the oldest Star Wars profanities. Used subsequently in novels, comic books, and games across decades of Star Wars publishing.

Has remained at a consistent mild-to-moderate level throughout its history. Never became as prominent as kriff or even karabast.

Remained a mild expletive throughout its usage. Never evolved beyond its original function.

Alderaanian in origin. After Alderaan's destruction, the word presumably survived among the diaspora.