tormenting
tor-ment-ing
verb
Causing extreme physical or mental suffering to a person or animal.
"The bullies were tormenting the smaller child."
adjective
Causing great pain, distress, or annoyance; extremely troublesome or upsetting.
"He suffered from tormenting headaches."
Thesaurus
Synonyms: curse, torment, frustrate, dun, bedevil, crucify, rag, bedevilment, worrying, badgering, rack, excruciate