marshes Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. a lowlying area often covered with tall grasses where the ground is soft and wet Example Sentence Turtles often feed near marshes. Synonyms bog; swamp; swampland; wetland Antonyms dry land Hear It! Say It! Write It! marshes Switch to cursive Start Share with your friends: