The phrase "be born with a silver spoon in your mouth" means that a person is born into a wealthy or privileged family where they have access to everything they want. However, several synonyms can be used to replace this phrase. For example, one can say that a person is "privileged," "fortunate," or "blessed." These words all suggest that a person has an advantage over others. Another phrase that can be used is "born into a life of luxury" or "born into a life of ease." These phrases indicate that the person was born into a lifestyle that allows them to experience comfort, luxury, and convenience. In conclusion, there are several synonyms that can be used to describe someone who is born into a wealthy family.