deserving or arousing hate
‘My name's Macbeth.’ ‘The devil himself could not pronounce a title more hateful to mine ear.’ — Shakespeare
archaic full of hate; malicious
See how the giddy multitude do point … Ah, Gloucester, hide thee from their hateful looks — Shakespeare
hatefully adv
hatefulness noun
As its form suggests, hateful orig meant ‘full of hate’. Probably because hatred is often a reciprocal act, the focus of the word soon came to be transferred from the person hating to the object of hatred. The two meanings have coexisted for more than six centuries, but the first meaning given above is now so prevalent that the second is liable to be misunderstood