No, painful an adjective, a word that describes a noun (a painful injury, a painful situation).
painful wrist
more painful, most painful
It is painful
very painful
painful!
painful
The positive form is the original adjective. The comparative form shows a greater degree of quality. The superlative form shows the highest degree of quality."Most painful" is the superlative. The positive is "painful", the root adjective. The comparative is "most painful".
Painful is correct.
That is the correct spelling of "painful."
Internal cysts can be unnoticeable or very painful. External cysts are rarely painful, but can be on occasion.
A painful journey would be a journey or trip that is either physically or mentally and emotionally painful.