TRIBALLY
Etymology
Adverb
tribally (comparative more tribally, superlative most tribally)
In a tribal manner or context.
Given all my aunts and uncles (and a couple more on my father's side), my cousins numbered almost a hundred; and since the family, for the most part, was centered in London (though there were far-flung American, Continental, and South African branches), we would all meet frequently, tribally, on family occasions.
Source: Wiktionary
TRIBAL
Trib"al, a.
Definition: Of or pertaining to a tribe or tribes; as, a tribal scepter.
Bp. Warburton.
Source: Webster’s Unabridged Dictionary 1913 Edition