Ebee ka okwu ahụ bụ́ "atra mors" bu ụzọ mee ihe? N'iburu ajụjụ nke mbụ n'uche, dee ihe gbara ya gburugburu bụ́ nke ga-enye azịza ya. Ọ nwere ike ịbụ 1 - 20 ahịrịokwu. Ihe ndị gbara ya gburugburu:
Gasquet (1908) kwuru na aha Latin atra mors (Ọnwụ Ojii) maka ọrịa nke narị afọ nke 14 pụtara na oge a na 1631 n'akwụkwọ banyere akụkọ ihe mere eme nke Danish site n'aka J.I. Pontanus: "Vulgo & ab effectu atram mortem vocatibant. ("N'ozuzu ya nakwa n'ihi mmetụta ya, ha kpọrọ ya ọnwụ ojii"). Aha ahụ gbasaruru Scandinavia ma mesịa gafee Germany, jiri nwayọọ nwayọọ ghọọ aha a na-akpọ ọrịa ahụ n'etiti narị afọ nke 14. N'England, ọ bụ n'afọ 1823 ka a malitere ịkpọ ọrịa ahụ na-efe efe n'oge ochie Ọnwụ Ojii.