"Down" is a synonym for "dowl." It refers to soft feathers or wool found on birds, geese, or sheep. "Fluff" and "fleece" are also similar words that can be used interchangeably. "Plumage" is another synonym for "dowl," but it is more specific to birds. Other related terms include "feathers" and "quills." When describing the quality of the feathers, words like "soft," "fluffy," "cozy," and "comfortable" can also work as synonyms for "dowl." Overall, there are plenty of words that can be used instead of "dowl," making it easy to vary word choice and keep writing interesting.