Old Japanese origin
Source-reported⟨aduma⟩ → /ad͡zuma/ → /azuma/ From Old Japanese, itself of unknown derivation.
Sources for this account (2)
- Wiktionary: 東CC-BY-SA-4.0 · retrieved 2026-10-15
- JMnedict entry 5551944CC-BY-SA-4.0 · rev. 2026-10-15 · retrieved 2026-10-15

