caballo (Spanish)

Where does "caballo" come from?

The Spanish word 'caballo' traces its ancestry back to the Latin 'caballus', a term specifically used for a pack horse or a workhorse. Its ultimate origin remains a mystery, likely stemming from an ancient wanderword linked to various Proto-Indo-European or Asiatic terms for horses. Over time, the word evolved to represent the domestic horse in Spanish, eventually expanding to encompass metaphorical meanings like knights, masters, and even specialized slang.

Full etymology tree

• caballo (Spanish), 'horse'
  • inherited caballus (Latin), 'pack-horse, jade, hack'
    • borrowed *kaballos (Gaulish)
      • inherited *kaballos (Proto-Celtic)
        • borrowed *kabah (Proto-Iranian)

Ancestors

• caballus (Latin)

Cognates and doublets

• cavalo (Portuguese)

Descendants and derived words

• kuái̱ (Alcozauca Mixtec)
• kabayo (Bikol Central)
• kabayo (Cebuano)
• kauayoj (Central Huasteca Nahuatl)
• cahuayoh (Central Nahuatl)
• kawali (Chamicuro)
• caballo (Chavacano)
• cawayuʼ (Chol)
• caballo (Classical Nahuatl)
• cahualloh (Classical Nahuatl)
• cahuayo (Classical Nahuatl)
• cauallo (Classical Nahuatl)

Updated July 2026

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Etymology data from Wiktionary, CC BY-SA 4.0 · About Miraris