Definition of retribalize in US English:

retribalize

(also retribalise)

verb

  • 1with object To restore (a person, society, etc.) to a tribal state; (in extended use) to reawaken the tribal instincts of.

  • 2with object To bring about a return to a collective rather than individualistic mode of behaviour and thought, due to the influence of telecommunications and electronic media.

Origin

1930s; earliest use found in The Times. From re- + tribalize.