Multiple choice Directions: Choose the option which is not the synonym of the given word. Quagmire Marsh Swamp Morass Boor Reveal answer Fill a bubble to check yourself D Correct answer Explanation Marsh is similar in meaning to quagmire. Swamp is similar, but it refers to a larger area which can include quagmires and marshes. Boor refers to a rude and unsophisticated man and is therefore the correct answer.