antinaturalist adjective 1noun 1forms 3 adjective1 •Opposing or rejecting naturalism.Ms. Callaghan, 36, is a genre-scoffing playwright whose antinaturalist works (“Dead City,” “Crawl, Fade to White”) have earned a downtown following. — 2009 noun1 •One who opposes or rejects naturalism. formsantinaturalists · more antinaturalist · most antinaturalist