When discussing the first amendments to the US Constitution, there are several synonyms that can be used. One of the most common is the 'Bill of Rights,' which refers to the first ten amendments as a collective unit. Alternatively, the phrase 'constitutional amendments' is often used as a broader term that encompasses any changes to the Constitution, including the first amendments. Another synonym is 'fundamental rights,' which refers to the basic individual liberties protected by the first amendments, such as freedom of speech, religion, and the press. Finally, the phrase 'foundational principles' can also be used to describe the first amendments, as they establish the framework for individual rights and protections in the United States.