Synonyms and related words :
acute, afflictive, agonizing, atrocious, barbarous, biting, consuming, cramping, cruel, desolating, distressing, excruciating, ferocious, fierce, gnawing, grave, griping, hard, harrowing, harsh, heartbreaking, heartrending, heartsickening, heartwounding, hurtful, hurting, inhuman, painful, paroxysmal, piercing, poignant, pungent, rending, savage, severe, sharp, shooting, spasmatic, spasmic, spasmodic, stabbing, stinging, tearing, tormenting, torturing, torturous