Cui bono is a Latin phrase that means "who benefits?" It is often used to ask who benefits from a particular action or situation, and is often used in legal contexts or when investigating a crime. However, there are many other phrases and words that can be used as synonyms for cui bono. These include "to what end," "for what purpose," "what's the point," and "what's in it for someone." These phrases all ask similar questions to cui bono, and can be used interchangeably depending on the context and situation. Ultimately, the goal of using these phrases is to uncover the underlying motives behind a particular action or situation.