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 

immane

pronoun. anybody, anything, anyone

The correlative ᴹQ. immane “anybody, anyone” appeared in Demonstrative, Relative, and Correlative Stems (DRC) from 1948 (PE23/111), a pronominal form of ᴹQ. imma “any”. It could also be used to mean “anything” for concrete things rather than abstract facts (which were imma).

Neo-Quenya: For purposes of Neo-Quenya, I would use aiquen for “anyone”; see ᴺQ. ai(a)- “any-” for discussion. I would ᴺQ. aima for “anything”.