Naturalist rhymes with:
agriculturalist, agriculturalist, agriculturalist, analyst, beautifullest, capitalist, catalyst, conversationalist, evangelist, formalist, gentlest, herbalist, humblest, institutionalist, journalist, littlest, monopolist, nationalist, neutralist, novelist, panelist, photojournalist, populist, psychoanalyst, socialist, specialist, stablest, televangelist, ultranationalist
Naturalist sounds like:
naturalized, neutralist, neutralized