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Latin word valeo comes from Proto-Indo-European *h₂wĺ̥h₁neh₂ (Wool.)
*h₂wĺ̥h₁neh₂ (Proto-Indo-European)
Wool.
*wlānā (Proto-Italic)
lanarius (Latin)
Wool-worker.
*h₂welh₁- (Proto-Indo-European)
*h₂wl̥h₁éh₁yeti (Proto-Indo-European)
*walēō (Proto-Italic)
To be strong.
valeo (Latin)
(Ecclesiastical Latin, Medieval Latin) I can; I prevail. (New Latin, rare) I leave; I go away. I am strong. I am well, healthy. I am worth.