A word appearing as ᴱQ. Elben “heart” in the Name-list to the Fall of Gondolin of the 1910s (LT2/202; PE15/23), but as ᴱQ. Elwen “heart” in the contemporaneous Qenya Lexicon under the early root ᴱ√LEFE (QL/35, 52). These words were connected to the character G. Elfrith who vanished from later versions of the legendarium.
Early Quenya
londa-
verb. to boom, bang
londa
noun. heart
elben
noun. heart
elwen
noun. heart
hon
noun. heart
honde
noun. heart
hondo
noun. heart
kie
noun. path
A verb appearing as ᴱQ. londa- “to boom, bang” in the Qenya Lexicon of the 1910s as a derivative of the early root ᴱ√LOŘO [LOÐO] (QL/56).
Neo-Quenya: Since the root √(S)LON was used for noise words in Tolkien’s later writings, I think this verb might be adapted into Neo-Quenya as ᴺQ. hlonda- “to boom, bang, make (loud) noise”, a verb form of the noun ᴺQ. hlondë “loud noise”.