chieftainly
Chieftainly is an English adjective describing something related to or characteristic of a chieftain or chieftainship. The term can refer to the authority, bearing, or manner associated with a tribal leader who exercises authority over a clan or community, or to objects or rites that pertain to chieftaincy. The word is infrequently used in contemporary English but appears in historical, ethnographic, and literary contexts to convey the aspects of leadership, charisma, or ceremonial prerogative attributed to a chieftain.
Originating from the noun chieftain and the adverbial suffix -ly, chieftainly is attested in Early Modern English
Chieftainly differs from simply using chief or chiefly in that it emphasizes style, conduct, or the ceremonial
See also: chieftain, chieftaincy, leadership, tribal authority.