Webster's English Dictionary

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morass

mo.rass \m*-'ras, mo.-\ \-'ras-e-\ n [D moeras, modif. of OF maresc, of Gmc 
   origin; akin to OE mersc)X marsh - more at MARSH 1: MARSH, SWAMP  2: 
   something that traps, confuses, or impedes  - morassy aj