Early Quenya
yú
adverb. twice
yú-
prefix. ago
akka
adverb. too
ende
cardinal. six
enekse
cardinal. six
enqe
cardinal. six
iye
adverb. ago
luin
adverb. ago
luina
adjective. ago
satta
adjective. both
uivi
adjective. both
There are more words but they are from Tolkien's earlier conceptional periods. Tolkien likely changed these words as he evolved the aesthetics and completeness of the languages. You may even find languages that Tolkien later rejected. Do not mix words from different time periods unless you are familiar with the phonetic developments.
Below: Tolkien's Late Period (1950–1973). These are from Tolkien's late conceptual period — his most settled forms of the languages. Prefer these over the earlier ones above when composing new text.