Is Darth Vader a dark jedi?

No. He was a Sith Lord.

And the inquisitors were, well... Inquisitors.

Different title from dark jedi as sith is a different title

Think about it: “Dark Jedi was a term for a Force-sensitive individual who followed the dark side of the Force but wasn't a Sith.”

Obviously, yes. The Inquisitors are not Sith, so by definition they are then Dark Jedi, because Dark Jedi is anyone who uses the dark side but isn't affiliated with the Sith.

Note that I'm going by Legends, though.

Then every dark side user ever is a dark jedi? Why would they be called jedi then?

I mean accept of the sith

I saw that you were using Legends :)

Great explication, Jou!

Yes I think so.

Timothy Zahn invented the term Dark Jedi to describe dark siders since I don’t think the term “Sith” was used in the OT. Zahn didn’t know what to call dark siders like Vader or Joruus_C%27baoth so he went with Dark Jedi.

It’s not really accurate though since they really don’t have anything to do with the Jedi. Zahn himself has gone on record and admitted it’s a little outdated.