morass Share definition Flag mo·rass (mè-räs', mô-)n. 1. An area of low-lying, soggy ground. 2. Something that hinders, engulfs, or overwhelms. - I got morass than you this weekend morass by jw July 18, 2004 0 0 Get merch Get the morass mug. Buy Now — $32.95 See more merch