1. Brought about or set up or accepted; especially long established
   "the established social order"; "a team established as a member of a major league"; "enjoyed his prestige as an established writer"; "an established precedent"; "the established Church";
   - constituted
    
2. Settled securely and unconditionally
   "that smoking causes health problems is an established fact";
   - accomplished, effected
    
3. Conforming with accepted standards
   "They followed the established protocols";
   - conventional
    
4. Shown to be valid beyond reasonable doubt
   "the established facts in the case"
    
5. Introduced from another region and persisting without cultivation
   "The established population of rabbits thrived in their new habitat";
   - naturalized, naturalised [Brit]

1. Set up or lay the groundwork for
   "establish a new department";
   - found, plant, constitute, institute
    
2. Start a new organization or institution
   "They established a charitable foundation";
   - set up, found, launch
    
3. Make clear the validity of something, as by an example, explanation or experiment
   "The experiment established the instability of the compound";
   - prove, demonstrate, show, shew [Brit, archaic]
    
4. Create or put in place (rules, laws, or conditions)
   "establish laws";
   - lay down, make
    
5. Bring about
   "The trompe l'oeil-illusion establishes depth";
   - give
    
6. Place
   "They established the new computer system in the office";
   - install, instal [Brit], set up
    
7. Build or create something abstract
   "establish a reputation";
   - build
    
8. Use as a basis for; found on
   "establish a claim on some observation";
   - base, ground, found

See also: deep-rooted, deep-seated, entrenched, foreign, grooved [informal], ingrained, legit [informal], legitimate, official, old line, old-line, orthodox, planted, proved, proven, recognised [Brit], recognized, self-constituted, self-established, settled, strange, well-established, well-grooved

Type of: affirm, confirm, corroborate, create, father, initiate, instal [Brit], install, make, open, open up, originate, pioneer, put in, set up, start, substantiate, support, sustain

Antonym: abolish, confute

Encyclopedia: Established