A name used collectively to describe Mandos and Lórien, the “Masters of Spirits” in Death and Dreams, respectively (S/28). This name is a plural compound of fëa “spirit” and the suffix -tur “master” (SA/fëa, tur).
Conceptual Development: This name dates back to the earliest Lost Tales, in the form ᴱQ/ᴹQ. Fanturi (LT1/79, LR/205), but in earlier writings it was often used in its singular form Fantur, especially in compound sobriquets of Mandos and Lorien: ᴱQ. Vefántur, ᴹQ. Nurufantur “Fantur of Death” for Mandos and ᴱQ/ᴹQ. Olofantur “Fantur of Dreams” for Lórien. This earlier form was glossed “Lord of Cloud” in the Etymologies from the 1930s, combination of fána “cloud” and -tur “lord” (Ety/SPAN, TUR).
In Silmarillion revisions from the 1950s-60s, the names Mandos and Lórien became the sobriquets, while their true names were Námo and Irmo (S/28, WJ/402-3). Fanturi became Fëanturi and was only used collectively (MR/145).