noun. One who accepts the practical or the theoretical doctrine of meliorism.

Of or pertaining to meliorism or meliorists.

noun. A proponent of meliorism

adjective. Of or relating to meliorism.

adjective. Supporting the principles of meliorism.

noun. a disputant who advocates reform

"No question but the novelist would have welcomed as a convincing proof of her 'meliorist' doctrine the progress made in her own homeland in the century since her birth."

controversialist  disputant  eristic  

Comstock  Dix  Hus  Huss  Owen