Potterer and Trifler

Potterer noun - A person who regularly or occasionally engages in an activity as a pastime rather than as a profession.

Trifler and potterer are semantically related in amateur topic. In some cases you can use "Trifler" instead a noun "Potterer".

Trifler noun - A person who lacks experience and competence in an art or science.

Potterer and trifler are semantically related in amateur topic. You can use "Potterer" instead a noun "Trifler".