independent -- (free from external control and constraint; "an independent mind"; "a series of independent judgments"; "fiercely independent individualism")
autonomous, independent, self-governing, sovereign -- ((of political bodies) not controlled by outside forces; "an autonomous judiciary"; "a sovereign state")
independent, main -- ((of a clause) capable of standing syntactically alone as a complete sentence; "the main (or independent) clause in a complex sentence has at least a subject and a verb")
independent -- (not controlled by a party or interest group)