Where does “глагольный” come from?

глагольный (Russian) comes from Russian глаго́л, from Church Slavonic глаголъ, from Proto-Slavic golgolъ, from Proto-Slavic gol-.

глагольный (Russian): verbal

Definitions

verbal

Ancestry of “глагольный”, step by step

Step	Language	Word	Meaning
1	Russian	глаго́л	verb
2	Church Slavonic	глаголъ	—
3	Proto-Slavic	golgolъ	speech; word
4	Proto-Slavic	gol-	—

Every word from Proto-Slavic gol- →

глагольный — Etymology, Origin & Word History | Etymology Explorer