A word appearing as ᴱQ. ellume “*one time” in the Early Qenya Grammar of the 1920s, a combination of ᴱQ. er “one” and ᴱQ. -llume “times” (PE14/51, 84). This document had an alternate ᴱQ. eru “once” as an adverbial form of er, also used as a prefix (PE14/51, 84).

Neo-Quenya: Since both er “one” and ᴹQ. -llume “time” survive in Tolkien’s later writings, I would retain ᴺQ. ellumë “once, one time” for purposes of Neo-Quenya, but eru “once” clashes with the later name of God: Eru “the One”. Tamas Ferencz instead suggested ᴺQ. millumë “once” using min “one [for counting]”, but I prefer to stick with the attested form.