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!

Qenya 

rimba

adjective. frequent, numerous, frequent, numerous, *(very) many, great in number or quantity

An adjective in The Etymologies of the 1930s glossed “frequent, numerous” derived from ᴹ✶rimbā under the root ᴹ√RIM (Ety/RIM). Demonstrative, Relative, and Correlative Stems (DRC) from 1948 had a similar word ᴹQ. hríma “very numerous (great in number or quantity)” (PE23/106). In drafts of DRC it was rhíma and was glossed “many” (PE23/106 note #80).

Neo-Quenya: For purposes of Neo-Quenya I prefer rimba “frequent, numerous” over hríma, since it better aligns with Tolkien’s later derivatives from the root √RIM. I would also use rimba for “✱(very) many”, as opposed to ᴹQ. lia “several” for a moderate number and ᴹQ. sempa for “few”.

Conceptual Development: The Qenya Lexicon of the 1910s had ᴱQ. limba “many” under the early root ᴱ√ (QL/53). It also had ᴱQ. olli “many” under the early root ᴱ√OLO, a plural adjective (QL/69).