- federate (v.)
[federate 词源字典]
- 1814 (implied in federated), a back-formation from federation, or else from Latin foederatus "leagued, federated, combined; having a treaty, bound by treaty," past participle of foederare "to establish by treaty," from foedus "covenant, treaty, alliance" (see federal). Related: Federating. As an adjective, by 1710.[federate etymology, federate origin, 英语词源]