The phrase "wave angle" refers to the angle at which a wave meets a particular point. When discussing waves, there are many different synonyms that can be used to describe the angle at which they occur. Some alternatives to "wave angle" include wave inclination, wave slope, wave gradient, wave pitch, and wave slant. All of these terms describe the angle of a wave in different ways, but they all relate to the same basic concept of the angle at which a wave meets a surface or point. Whether you are discussing ocean waves, sound waves, or any other type of wave, these synonyms can help you to describe them in a clear and precise way.