Assume things are graded in some way and some level is assigned the attribute 'normal'. Things which stay (always) above this level are called elevated (relative to the norm). Things which stay (always) below this level are called what?
Edit: I have intentionally omitted a closer context because I am interested in the most general applicable word. But: the word should be used in a technical, neutral sense, not in a moral judgment.
Edit 2: The answer I choose is in fact a comment by @FrustratedWithFormsDesigner: "There is no canonical generally applicable word."