Marshy/ˈmɑːrʃi/ Definition 1 of 1Pro Tip 1/3Natural Settings Used to describe natural areas that are often wet, implying the presence of water and plants. Birds thrive in the marshy edges of the river. Pro Tip 2/3Challenging Terrain Suggests difficult walking conditions due to the wet, soft ground. The hikers found the marshy terrain challenging to cross. Pro Tip 3/3Habitats Abound Indicates areas that provide a habitat for a variety of wildlife, especially amphibians and birds. We observed several species in the marshy habitat.