abhorrent (adj.)

1610s, "recoiling (from), strongly opposed to," from Latin abhorentem (nominative abhorrens) "incongruous, inappropriate," present participle of abhorrere "shrink back from, be remote from, be out of harmony with" (see abhor). Meaning "repugnant, loathesome" is from 1650s. Earlier was abhorrable (late 15c.).