Mockup is a term used to describe a representation or prototype of a product or design. However, there are various synonyms that can be used to replace this word, depending on the context of the sentence and the purpose of the word. Examples of synonyms that can be used to replace mockup include prototype, model, sample, draft, blueprint, layout, simulation, and representation. These words are all related to the idea of an early version or design for a project, and can be used interchangeably with mockup depending on the situation. Whether you're discussing design projects, product development, or other creative processes, there are plenty of alternative ways to describe a mockup that can help you communicate your ideas more effectively.