The Collaborative International Dictionary of English v.0.48:

Wlatsome \Wlat"some\, a. [AS. wlatian to disgust, irk, wl?tta
   loathing.]
   Loathsome; disgusting; hateful. [Obs.]
   [1913 Webster]

         Murder is . . . wlatsom and abhominable to God.
                                                  --Chaucer.
   [1913 Webster]