надгробний (Ukrainian) comes from Ukrainian гріб, from Old East Slavic гробъ, from Proto-Slavic grǫbъ, from Proto-Slavic grěti, from Proto-Indo-European gʷʰer-, from Proto-Indo-European gʷʰe-gʷʰór-e ~ gʷʰe-gʷʰr-ḗr.
надгробний (Ukrainian): located on or over a grave