ᴹ√LUS root. “*empty”
A root in The Etymologies of the 1930s whose derivatives had to do with empty things, such as ᴹQ. lusta “void, empty”, N. lhoss “wilderness” and N. lhost “empty” (Ety/LUS). The last of these was an element in the name N. Lhothlann or Lothland “Empty and Wide” (Ety/LAD; LR/264), and Tolkien’s continued use of S. Lothlann in later versions of the Silmarillion indicate the ongoing validity of this root (S/123).
References ✧ Ety/KAB, LAD, LUS