yksi (Finnish)

Where does "yksi" come from?

The Finnish word 'yksi' originates from the reconstructed Proto-Uralic root *ükte, meaning one. It evolved through Proto-Finnic into its present form, maintaining its foundational numerical meaning over thousands of years. This ancient root remains evident today across a wide range of related languages, including Estonian, Northern Sami, and Udmurt.

Full etymology tree

• yksi (Finnish), 'one'
  • inherited *ükci (Proto-Finnic), 'one'
    • inherited *ükte (Proto-Finno-Ugric)
      • inherited *ükte (Proto-Uralic), 'one'

Ancestors

• *ükci (Proto-Finnic)
• *ükte (Proto-Uralic)

Cognates and doublets

• вейке (Erzya)
• üks (Estonian)
• okta (Northern Sami)
• одӥг (Udmurt)

Descendants and derived words

• aamuyksi (Finnish)
• iltayksi (Finnish)
• jokayksi (Finnish)
• kahdeksankymmentäyksi (Finnish)
• kaksikymmentäyksi (Finnish)
• kolmekymmentäyksi (Finnish)
• kuusikymmentäyksi (Finnish)
• neljäkymmentäyksi (Finnish)
• satayksi (Finnish)
• seitsemänkymmentäyksi (Finnish)
• tuhatyksi (Finnish)
• viisikymmentäyksi (Finnish)

Updated July 2026

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