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Latin word vis comes from Proto-Indo-European *wih₁rós, and later Proto-Italic *wīs (Strength, force, power.)
*wih₁rós (Proto-Indo-European)
*wéyh₁s (Proto-Indo-European)
*wīs (Proto-Italic)
Strength, force, power.
vis (Latin)
(New Latin, physics) energy, force. (figuratively) assault, affront. Force, power, strength. Violence.