The term "wave shape" refers to the physical form of waves, which can take on a variety of different patterns depending on their properties and environmental factors. Synonyms for wave shape might include terms like "crest," "trough," "peak," "valley," or "amplitude," which all describe different aspects of a wave's structure. Other synonyms might include "undulation," "ripple," "oscillation," or "vibration," which all suggest movement or motion that is similar to that of waves. Ultimately, there are many different synonyms that can be used to express the concept of wave shape, depending on the specific context and desired connotations of the term.