Painful doesn’t carry this connotation at all. That had to hurt means like when someone falls and has a really bad injury. You would say that had to hurt meaning that it must have been painful.|it mean that it had to hurt the person/whatever
Hurtful carries a strong connotation that the hurt is deliberate, or at least callous. A painful injury, a painful memory, a painful needle, but not a painful person or painful dog (to mean that they have pain). My arm is painful 変だね! it's painful when you poke my arm with a needle!
Sorrow implies sadness but sounds deeper and longer lasting, and it might be painful. Feel a pain的同義字yeah, painful is strange! For instance, if someone makes a crude. Pain is just the generic word for pain.
We say, it's painful, but you can't replace the pronoun it with the thing that's hurting. Definition of that had to hurt! The poem is rather weak from beginning to end, but the writer's use of painfully slow is apt because she means so slow as to be painful. the earliest confirmed google books math for painstakingly slow is from richard parker, claude de l'estoile: Also, hurtful is mostly reserved for emotional or psychological pain, while painful can refer either to emotional or physical pain.
Something that is painful is the cause of pain: My arm is painful 変だね! Poet and dramatist (1930) [combined snippets]: Painful can be emotional, but i have never seen hurtful used to denote physical betrayal is hurtful and painful, but a broken leg is just painful
Painful is much more appropriate than hurtful in your example sentence. Hurtful is more emotional while painful is usually more physical.