established

adjectives

brought about or set up or accepted; especially long established

"the established social order"; "distrust the constituted authority"; "a team established as a member of a major league"; "enjoyed his prestige as an established writer"; "an established precedent"; "the established Church"

constituted, established

antonym

unestablished

settled securely and unconditionally

"that smoking causes health problems is an accomplished fact"

accomplished, effected, established

conforming with accepted standards

"a conventional view of the world"

conventional, established

shown to be valid beyond a reasonable doubt

"the established facts in the case"

established

is similar to

established beyond doubt

"a proven liar"; "a Soviet leader of proven shrewdness"

proved, proven

introduced from another region and persisting without cultivation

established, naturalized