IPA: /ˌɪn.təˈtraɪ.bəl/
KK: /ɪnˈtərˌtraɪbəl/
Relating to or happening between different tribes.
The intertribal meeting brought together leaders from various communities to discuss shared concerns.
Intertribal → It is formed from "inter-" (meaning between) and "tribal" (from "tribe", which comes from Latin "tribus", meaning a group of people). The word "intertribal" refers to something that occurs between different tribes.
Think of things happening "between" different "tribes" — that's what intertribal means.