Abhor

[William Hupy]

I don't get this. The prefix here means away from, but when used in aborigine, it means from. Is this a contranym prefix? But this word evolved most interestingly from its PIE root of ghers, which meant stand ou, rise to a point, bristle, which is exactly what one does when shuddering or trembling with dread.

[Slava]

Why would this be a contranym? Away from and from seem quite nicely related to me.

[Perry Lassiter]

Perhaps it relates to the multiple meanings of the Latin preposition ab, mirrored in Greek. Both languages allow ab to take one of three or four possible cases: locative, instrumental, dative, and perhaps accusative. Context determines meanings: to, from, of...