THESAURUS
originally
ab initio, ab ovo, aborigine, at first, at the start, before everything, by birth, by nature, chiefly, congenitally, first, first and foremost, first thing, firstly, from the beginning, genetically, immanently, in the beginning, initially, innately, internally, intrinsically, inwardly, mainly, naturally, primally, primarily, primitively, primo, principally