nonfiction Share definition Flag (adj.) something true; when someone is telling a story that is factual one says NONFICTION. synonyms: true story Person A: "Darian your hair be so fly!" Person B: "Nonfiction." nonfiction by J. Tiong December 3, 2009 0 0 Get merch Get the nonfiction mug. Buy Now — $32.95 See more merch