Early Primitive Elvish
fiři
root. *hair
fiði
root. *hair
firiŋi Reconstructed
root. necklace
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 hypothetical early root to explain words such as ᴱQ. firinga and G. fring “carcanet, necklace” (GL/36). The latter reappeared in Early Noldorin word lists from the 1920s as ᴱN. fring “necklace” (PE13/143), but in versions of the Silmarillion later in Tolkien’s life the Sindarin word for “necklace” was S. sigil (WJ/258). I think it is worth positing a Neo-Root ᴺ√FIRING to salvage some of these early words.