A suffix for “long” in the Qenya Lexicon of the 1910s with variants lēni or lēnu, both base on the early root ᴱ√LENE “long” (QL/53). These Qenya suffixes were also mentioned in the contemporaneous Gnomish Lexicon (GL/39).
Early Quenya
sóra
noun. seat
sóra
adjective. long, trailing
sóra
cardinal. million; (vaguely) a very great number
-(n)dóra
suffix. million
-léni
suffix. long
-lénu
suffix. long
anda
adjective. long
andra
adjective. long
mindóra
cardinal. million
mindóre
cardinal. million
A word in the Gnomish Lexicon of the 1910s, the Qenya equivalent of G. sûr “long, trailing” (GL/68).