unroyalist
/ʌnˈroʊəlɪst/Definitions
1. noun
A person who opposes a monarchy or royal authority, especially a person who supports republicanism or the overthrow of a monarchy.
“The unroyalist movement gained momentum as the people began to demand greater democracy and representation.”
2. adjective
Relating to or opposing a monarchy or royal authority.
“The unroyalist sympathies of the writer were evident in her critique of the monarch’s actions.”