painful
acute
afflictive
atrocious
biting
consuming
cramping
cruel
desolating
distressful
distressing
excruciating
exquisite
fierce
gnawing
grave
griping
hard
harrowing
harsh
heartbreaking
heartrending
heartsickening
heartwounding
hurtful
hurting
intense
paroxysmal
piercing
poignant
pungent
racking
rending
severe
sharp
shooting
spasmatic
spasmic
spasmodic
stabbing
stinging
tearing
tormented
tormenting
tortured
torturesome
torturing