Descendingly is an adverb that describes something that moves or goes downwards. Some great synonyms for descendingly include downward, lowering, falling, dropping, sinking, and declining. These words portray a range of movements, from a gentle descent to a plummeting fall. You can use these synonyms to add variety and depth to your writing. For instance, if you are writing about the stock market's performance, you can use the word declining instead of descendingly to describe the downward trend. Similarly, if you are writing about a waterfall, you can use the word falling instead of descendingly to add more vividness to your description.