An adjective meaning “mortal”, more literally “those apt to die”, a Sindarin adaptation of Q. fírima of the same meaning, both based on the root √PHIR having to do with natural death (WJ/387). It was also used as Fíreb to refer to Mortal Men, a variant of Feir of similar meaning. Tolkien said “Fíreb as compared with Fírima shows the use of a different suffix, since the S equivalent of Q -ima (*-ef) was not current” (WJ/387).