Most Sensationalistic is a term used to describe something that is excessively dramatic, exaggerated, or sensationalized. Its antonyms would be words that describe something that is subdued, underplayed, or low-key. Some antonyms of most sensationalistic include restrained, understated, subtle, muted, moderate, temperate, and unpretentious. These words describe a style that is dignified, sober, and refined, without being showy or flamboyant. Using such antonyms in writing or speech will provide a balanced and measured tone, without the exaggerated sensationalism that leads to misinformation, propaganda, or social prejudice.