This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. A proponent of meliorism

adj. Of or relating to meliorism.

adj. Supporting the principles of meliorism.

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

Of or pertaining to meliorism or meliorists.

n. 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."

disputant    controversialist    eristic   

abolitionist    protester    nonresistant    flower child    utopian    hippie    hippy    militant    chartist    rebel