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Latin word jurare comes from Proto-Indo-European *h₂ey-, and later Proto-Indo-European *h₂óyu (Long time, lifetime.)
*h₂ey- (Proto-Indo-European)
*h₂óyu (Proto-Indo-European)
Long time, lifetime.
*h₂yew- (Proto-Indo-European)
*h₂yew-es-eh₂-ye- (Proto-Indo-European)
*h₂yéw-os (Proto-Indo-European)
*jowos (Proto-Italic)
Law. Oath.
ious (Old Latin)
*jowezāō (Proto-Italic)
Swear (an oath).
iovesat (Old Latin)
ius (Latin)
Court of law. Law, right, duty.
juro (Latin)
xurar (Asturian)
To swear (promise).