Middle Primitive Elvish
-rō
suffix. agent
-rō
suffix. -reason
rō/oro
root. rise, up, high
oro
root. rise, up, high
rāu
noun. lion
tār(ō)
noun. king
yan
root. give
-ndō
suffix. agental suffix
am
root. up
on-rō
adverb. *for the very same reason
orta-
verb. to rise
-nō
suffix. agent
A root in The Etymologies of the 1930s glossed “give” with derivatives ON. yanta- “give” and ᴹQ. Ariante “Day-bringer” (EtyAC/YAN²). Tolkien marked this entry with a “?”, and elsewhere in The Etymologies he derived ᴹQ. anta-/N. anna- “give” from ᴹ√ANA (Ety/ANA¹), so I suspect this root was a transient idea.