communis (Latin)

Where does "communis" come from?

The Latin adjective 'communis' traces back to the Proto-Italic '*kommoinis'[1][2]. This term finds its roots in the Proto-Indo-European '*ḱom-moy-ni-s', a formation built from the root '*mey-' meaning 'to change'[1][2]. The word implies a sense of something held or shared among people, a concept reinforced by the Proto-Italic root '*moinos' signifying 'service'. Beyond its Latin form, the same underlying etymological history is reflected in the Proto-Germanic '*gamainiz', which also denotes 'shared' or 'communal' qualities.

Open questions

• The reconstruction of the Proto-Indo-European form '*ḱom-moy-ni-s' remains a scholarly hypothesis based on comparative linguistic analysis. [1] [2]

Full etymology tree

• communis (Latin), 'common, commonplace, ordinary, general, universal, shared, shared alike, of both sides, belonging to two or more together'
  • inherited co(m)moinis (Old Latin)
    • inherited *kommoinis (Proto-Italic), 'common'
      • inherited *ḱom-moy-ni-s (Proto-Indo-European)
        • derived *mey- (Proto-Indo-European), 'to strengthen'

Ancestors

• *kommoinis (Proto-Italic)

Cognates and doublets

• *gamainiz (Proto-Germanic)
• *moinos (Proto-Italic)

Sources

1. communis (Latin) - Wiktionary
2. kommoinis (Proto-Italic) - Wiktionary

Updated August 2026

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