Middle Primitive Elvish
lad
root. lie flat, be flat
lāda
adjective. flat
dal
root. flat
nis
root. woman
nī
noun. woman
ed(er)
root. open
indise
feminine name. bride
lătĭna
adjective. flat (and wide)
ndīse
noun. bride
nī̆s
noun. woman
pantā
adjective. open
patnā
adjective. wide
tārī
noun. queen
A deleted root in The Etymologies of the 1930s with the gloss “open” and the forms √ED and extended √EDÉR, but it had no derivatives (EtyAC/ED).