Aching
Part of speech: adjective
Definition: That aches; continuously painful. See ache
Part of speech: verb
Definition: To suffer pain; to be the source of, or be in, pain, especially continued dull pain; to be distressed.
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: Solitude, isolation, are painful things and beyond human endurance.