The Collaborative International Dictionary
Gentilitial
Gentilitial \Gen`ti*li"tial\, Gentilitious \Gen`ti*li"tious\, a.
Peculiar to a people; national.
--Sir T. Browne.Hereditary; entailed on a family.
--Arbuthnot.
Wiktionary
gentilitial
a. 1 (context obsolete English) specific to a people; national 2 (context obsolete English) hereditary; entailed on a family