What is the meaning of independent?

noun

• A neutral or uncommitted person (especially in politics.
  • synonyms: mugwump, fencesitter
• A writer or artist who sells services to different employers without a long-term contract with any of them.
  • synonyms: freelancer, freelance, free-lance, free lance, self-employed person

adjective

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