Ianus (Latin)

Where does "Ianus" come from?

The Latin name 'Ianus' descends from the noun 'iānus', which referred to an 'arcade' or 'covered passageway'[1]. This noun evolved from the Proto-Italic '*jānos'[1][2], which itself traces back to the Proto-Indo-European root '*yeh₂-', meaning 'to go', 'go in', or 'travel'[1][2]. This ancient root is also reflected in the Sanskrit word 'yāna', meaning 'path', and the Old Church Slavonic verb 'ꙗхати', meaning 'to travel'.

Open questions

• The Proto-Italic form '*jānos' is a reconstructed ancestor that is not directly attested in writing. [1] [2]
• The Proto-Indo-European root '*yeh₂-' is a reconstructed form based on linguistic evidence from descendant languages. [1] [2]

Full etymology tree

• Ianus (Latin), 'The god Janus.'
  • inherited ianus (Latin), 'arcade; covered passageway'
    • inherited *jānos (Proto-Italic)
      • derived *yeh₂- (Proto-Indo-European), 'to go'

Ancestors

• *yeh₂- (Proto-Indo-European)

Cognates and doublets

• ꙗхати (Old Church Slavonic)
• यान (Sanskrit)

Sources

1. Ianus (Latin) - Wiktionary
2. ianus (Latin) - Wiktionary

Updated August 2026

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