The word "mock" means to tease or make fun of someone or something in a cruel or sneering way. It can also refer to imitating someone in a way that seems to belittle them or to simulate something for practice or educational purposes. For example, a mock trial is a practice trial for law students.
The word "mock" comes from the late Middle English word "mokken," which means to make fun of or to deride. It has its roots in the Old French word "moquer," meaning to jest or to deride, which is derived from the Latin term "moc-care," meaning to scoff.