dai

noun/adjective. sky; high

A noun for “the sky” appearing in the Gnomish Lexicon of the 1910s (GL/29), likely derived from the root ᴱ√TAHA [DAHA] as suggested to Christopher Tolkien (LT1A/Telimektar; QL/87). ᴱN. dai “sky” appeared again in Early Noldorin Word-lists of the 1920s (PE13/141), but in marginal notes to the Lays of Beleriand of the 1920s it was glossed “high” (LB/49 note on line #946). Its most notable use was in the name Dor-na-Dhaideloth “[Land of] the Heaven Roof” (LT2/287), but in later writings this name became Dor Daedeloth, with an initial element of N. dae “shadow” >> S. daer “great”.

agos

adverb. very

dâ

adjective. high

A word glossed “high” in Early Noldorin word lists of the 1920s derived from ᴱ✶dagá (PE13/141, 161). The Gnomish Lexicon of the 1910s also had G. dâ “high” (GL/29), while the Gnomish Lexicon Slips modifying that document had G. da “high” also derived from ᴱ✶dagá (PE13/112). In Tolkien’s later writings, the root became √TĀ/TAƷ, so these d-forms would have been abandoned.

telum

noun. sky, sky; [G.] roof