If your asking what *pachyderm means.
then it means a very large animal with thick skin, like an elephant or rhino.
1. suffix-less meaning- not helpful
2. suffix-ly meaning- going fast
3. suffix-ful meaning- hurting and object
4. suffix-less meaning- not thinking/ or uh idk
i really do hope this helped :)
Answer:
lol 3rd okokokokokokokokokokok