một (Vietnamese)

Where does "một" come from?

The Vietnamese word 'một' traces its origins back to the Proto-Austroasiatic root *muəjʔ, which evolved into Proto-Vietic *moːc. Over time, it spread across the region, sharing cognates with diverse languages like Khmer, Mon, and Santali. The word has remained remarkably consistent in its meaning of 'one' throughout its long history.

Full etymology tree

Ancestors

Cognates and doublets

Descendants and derived words

Updated July 2026

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