independent - noun

a neutral or uncommitted person (especially in politics)

a writer or artist who sells services to different employers without a long-term contract with any of them

independent - adjective

• free from external control and constraint
• (of a clause) capable of standing syntactically alone as a complete sentence
• (of political bodies) not controlled by outside forces
• not controlled by a party or interest group

independent - thesaurus

autonomous   fencesitter   freelance   freelancer   main   mugwump   sovereign