A root meaning “delicate” or “fair of form” that appears in a couple distinct etymological note from 1959; in one of them it was the basis for Q. Elda/S. Edhel (PE17/159). Given the revised etymologies for words for “Elf” in the Quendi and Eldar essay written soon thereafter, this root may have been short lived.
Primitive elvish
sow
root. wash, bath
red
root. scatter, sow
reddā
noun. sown field, acre
kiris
root. cleave, cleave, [ᴹ√] cut, [ᴱ√] split
del
root. *fair
This root first appeared as ᴹ√RED “scatter, sow” in The Etymologies of the 1930s along with augmented variant ᴹ√ERÉD and derivatives like ᴹQ. erde/N. eredh “seed, germ” and ᴹQ. resta/N. rîdh “sown field, acre” (Ety/ERÉD, RED). √RED appeared again in the Outline of Phonology (OP2) from the early 1950s with the same gloss “scatter, sow” and derivatives Q. resta/S. rîdh “sown field” (PE19/91). The Quenya word resta reappeared in the 1964 phrase Q. nai elen siluva parma-restalyanna meldonya “✱may a star shine upon your book-fair, my friend” (VT49/38), which might indicate the ongoing validity of this root, but it is also quite possible that resta “✱fair” has a completely different etymology.