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 

-nil

suffix. -friend

-nildo

suffix. -friend

-dil

suffix. -friend

-iel

suffix. -friend

-(n)dil

suffix. -friend

Qenya [Ety/NIL; EtyAC/NIL] Group: Eldamo. Published by

nilmo

noun. friend

-dildo

suffix. -friend

-el

suffix. friend

-ser

suffix. friend

helde

noun. friend

heldo

noun. friend

helmo

noun. friend

málo

noun. friend

Qenya [Ety/MEL; PE18/046] Group: Eldamo. Published by

sermo

noun. friend

seron

noun. friend

sondo

noun. friend