Wrenching
Part of speech: verb
Definition: To violently move in a turn or writhe.
Painful
Part of speech: adjective
Definition: Full of pain; causing hurt, uneasiness or distress, either physical or mental; afflictive; disquieting; distressing.Requiring effort, labor or toil; difficult; executed with laborious effort; as a painful service; a painful march.Painstaking; careful; industrious
Example sentence: Guilt is perhaps the most painful companion of death.