a.
1.
Distressing, afflictive, afflicting, painful, sad, deplorable, lamentable, hard to bear.
2.
Hurtful, injurious, baneful, noxious, mischievous, detrimental, destructive, calamitous.
3.
Atrocious, heinous, flagitious, outrageous, intolerable, dreadful, gross, iniquitous, flagrant, aggravated.