federate
1. [ adjective ] united under a central government
Synonyms: federated
Related terms: united
2. [ verb ] enter into a league for a common purpose
Synonyms: federalize federalise
Examples:

"The republics federated to become the Soviet Union"

Related terms: unify
3. [ verb ] unite on a federal basis or band together as a league
Synonyms: federalize federalise
Examples:

"The country was federated after the civil war"

Related terms: unite federation
Similar spelling:   federated
  federation
  fettered
  federita