Inviolable
Part of speech: adjective
Definition: Not violable; not susceptible of violence, or of being profaned or corrupted; incapable of being injured; not to be infringed or dishonoured.
Unalienable
Part of speech: adjective
Definition: Not alienable
Example sentence: I think at the heart of the pro-life movement is the idea that all people are created equal, endowed by their creator with certain unalienable rights starting with life.