Etymology

Buenos Aires

Bue·nos Ai·res

Today it means: The capital city of Argentina. Full definition →

Spanish Buenos Aires ← Aragonese buen ayre ← Sardinian bonaria
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The story

  1. Sardinian · derived frombonaria
  2. Aragonese · derived frombuen ayre
  3. Spanish · borrowed fromBuenos Aires
  4. English todayBuenos Aires

Borrowed from Spanish Buenos Aires, named after an epithet of the Virgin Mary, itself ultimately derived from Aragonese buen ayre (literally “good air”) or derived from Sardinian bonaria. The first English attestation dates to 1764.

Etymology from Wiktionary, CC BY-SA 4.0.