A rejected root for “friendship” in The Etymologies of the 1930s (EtyAC/ÑEL), apparently replaced by ᴹ√N(D)IL.
Middle Primitive Elvish
n(d)il
root. friend; love, devotion
ithil
noun. moon
mālō
noun. friend
ranā
proper name. Moon
yel
root. friend
ñel
root. friendship
A new gloss for the root ᴹ√YEL “daughter”, with a new set of derivatives like ᴹQ. -iel “-friend” and ᴹQ. yelda “friendly” (Ety/YEL), but it was rejected in turn and probably replaced by ᴹ√MEL.