Crossword clues for the word: IGNIS The word IGNIS has appeared as an answer to at least 12 crossword clues on different crossword puzzles. Crossword clues for IGNIS Showing 1 to 12 of 12 results Clue(s) ___ fatuus (an illusion) ___ fatuus (false goal) ___ fatuus (light over a swamp) ___ fatuus: delusion ___ Fatuus: will-o-the-wisp ___ fatuus. "Fire, to Flavius" Fire: Lat. Flavius's fire I sing of Roman fire Roman fire Top of a Roman candle?