Qenya
li(n)-
prefix. many
li(n)an
adverb. many a time, not seldom, several times, often, sometimes
linin-
prefix. many
Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!
A correlative combination appearing as lian or linan “many a time, not seldom, several times, often, sometimes” in Demonstrative, Relative, and Correlative Stems (DRC) from 1948 (PE23/110), a combination of ᴹQ. li(n)- “several, many” and ᴹQ. -n(an) “times”.
Neo-Quenya: For purposes of Neo-Quenya I would stick to ᴹQ. lillume, since I think -n(an) was abandoned.