Synthetic Cubism is an art movement that emerged in the early 20th century, marked by its use of abstract shapes and collages. Some possible synonyms for Synthetic Cubism might include abstract collage art, geometric modernism, or cubist abstraction. These terms all convey a sense of the movement's focus on geometric shapes, flattened forms, and the use of found materials in creating new and innovative artworks. Other potential synonyms might include cubist experimentation, post-impressionist abstraction, or avant-garde collage. Ultimately, the precise terminology used to describe Synthetic Cubism will depend on the context in which it is being discussed, and the particular aspects of the movement which are being emphasized.