oito (Portuguese)

Where does "oito" come from?

The Portuguese word 'oito' traces its roots back to the ancient Proto-Indo-European *oḱtṓw, a term likely representing a dual count of 'four fingers.' It passed into Latin as 'octō' before evolving through Old Galician-Portuguese to become the modern word used today. This lineage makes it a linguistic cousin to many other European words for the number eight, including the French 'huit' and the Italian 'otto'.

Full etymology tree

• oito (Portuguese), 'eight (cardinal number 8)'
  • inherited oito (Old Galician-Portuguese), 'eight'
    • inherited octō (Latin), 'eight; 8'
      • inherited *oktō (Proto-Italic), 'eight'
        • inherited *oḱtṓw (Proto-Indo-European), 'eight'
          • inherited *(H)oḱto- (Proto-Indo-European)

Ancestors

• oito (Old Galician-Portuguese)
• octo (Latin)
• *oḱtṓw (Proto-Indo-European)

Cognates and doublets

• huit (French)
• oito (Galician)
• otto (Italian)
• ocho (Spanish)

Updated July 2026

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