What is the meaning of establish?

verb

• Set up or found.
  • usage: "She set up a literacy program"
  • synonyms: set up, found, launch
• Set up or lay the groundwork for.
  • usage: "establish a new department"
  • synonyms: found, plant, constitute, institute
• Establish the validity of something, as by an example, explanation or experiment.
  • usage: "The experiment demonstrated the instability of the compound"; "The mathematician showed the validity of the conjecture"
  • synonyms: prove, demonstrate, show, shew
• Institute, enact, or establish.
  • usage: "make laws"
  • synonyms: lay down, make
• Bring about.
  • usage: "The trompe l'oeil-illusion establishes depth"
  • synonyms: give
• Place.
  • usage: "Her manager had set her up at the Ritz"
  • synonyms: install, instal, set up
• Build or establish something abstract.
  • usage: "build a reputation"
  • synonyms: build
• Use as a basis for; found on.
  • usage: "base a claim on some observation"
  • synonyms: base, ground, found