"Ing double" refers to words that contain two consecutive letters "ing" in them. These words not only add a rhythmic sound to sentences but also contribute to the flow of the language. Synonyms for "ing double" include terms like "gerund double", "progressive double" or "continuous double". These synonyms capture the essence of describing ongoing or continuous actions and highlight the repetition of the "ing" sound. The use of these synonyms can create a melodious effect, making sentences more engaging and captivating for readers or listeners. Experimenting with different synonyms for "ing double" can enhance the variety and beauty of written or spoken language.