_, the word fern means "dead" with reference to the (inevitable) death of mortals. Also gwann (departed), lenited wann; pl. gwain
Sindarin
fern
noun/adjective. dead, dead person; [N.] dead (of mortals)
fern
phir
fileb
noun. fern
gorth
dead
(adj.) 1) gorth (lenited ngorth; pl. gyrth), also fern, pl. firn. These adjectives may also be used as nouns ”dead person(s)”. According to LR:381 s.v. _
gorth
noun. a dead person
gorthrim
noun. the dead
An adjective in The Etymologies of the 1930s glossed “dead (of mortals)” under the root ᴹ√PHIR “die of natural causes”, used as a plural noun in the name Dor Firn i Guinar “Land of the Dead that Live” (Ety/PHIR). Christopher Tolkien choose to include the name Dor Firn-i-Guinar in the published version of The Silmarillion (S/188), and most Sindarin writers accept its ongoing validity.