aig

adjective. high, steep

lhaig

adjective. sharp

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.