Anatidae is a family of water birds that includes ducks, geese, and swans. There are many synonyms for Anatidae that can be used in place of this word. Some synonyms include waterfowl, wildfowl, waterbirds, and web-footed birds. Each of these words describes the family of birds that share similar characteristics, such as the ability to swim and dive in water and having webbed feet for efficient movement. Other words that can be used in place of Anatidae include dabbling ducks, diving ducks, and wading birds, which describe specific groups within the family. Overall, Anatidae and its synonyms are useful words for describing these fascinating and diverse birds.