Half Jedi

"Half Jedi" is a term created and used by only a few Jedi, as a type of slang, and used to express the rank of an initiate who has not yet mastered all forms of the force, but shows mush potential and a large connection to the force, as well as very limited ability with a lightsaber.

Sometimes this phrase is also referring to alien species that can either use the force or use a lightsaber, but doesn't have the ability to do both. An example of this are Sewokas, an alien species that can only use the force and always have to be in water.