Established
Established adjective - Brought about or set up or accepted; especially long established.
Valid and established are semantically related. in conclusively proved topic. In some cases you can use "Valid" instead an adjective "Established".
Nearby Words: establishment, establishing
Valid
Valid adjective - According to the rules of logic.
Established and valid are semantically related. Sometimes you can use "Established" instead an adjective "Valid".
Nearby Words: validity, validation
Mutual synonyms
Related pairs
Both words in one sentence
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At the Nuremberg trials, it was established that "just following orders" is a valid defense, but only below the rank of lieutenant, and only if the orders in question are not clearly illegal.
Source: Just Following Orders - Tolkien and The Lord of the Rings established "dwarves" as the standard plural of "dwarf" in High Fantasy; Tolkien had a valid philological reason for wanting to change the accepted spelling ("dwarfs" is a bad plural formation, and it's properly "dwarrow" from the Middle English formation).
Source: Neologism - However, in the last regular episode of Star Trek TNG, the Data of the (possibly no longer valid) future had had some gray added to his hair to simulate aging just to 'try it out.' The perfect explanation should they ever want to bring Data is already established.
Source: Character Aged with the Actor
Cite this Source
Valid and Established. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/established/valid
Established & Valid. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/established/valid>.
Valid or Established. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/established/valid.
Google Ngram Viewer shows how "established" and "valid" have occurred on timeline