Question

Does more painfully or morepainfullier sound better in the sentence jermey shurdded more painfulier or mosy painfully

Answer 1

Painfullier is not a word. It would be proper to say ' most painfully' if you are comparing Jermeys pain to another.  If you are not comparing Jermeys pain than just use painfully.  Sherdded is also not a word.
Jermy shrudded most painfully.
this is not a proper sentence because there is nothing to compare Jermeys pain to. So it would just be, 'Jermy shrudded painfully.