Confirmed
Confirmed adjective - Being such by habit and not likely to change.
Long standing and confirmed are semantically related. In some cases you can replace phrase "Long standing" with "Confirmed", this terms are similar.
Long standing
Confirmed and long standing are semantically related. Sometimes you can use "Confirmed" instead an adjective phrase "Long standing".
Mutual synonyms
Cite this Source
Long standing and Confirmed. (2016). Retrieved 2026, July 31, from https://thesaurus.plus/related/confirmed/long_standing
Confirmed & Long standing. N.p., 2016. Web. 31 Jul. 2026. <https://thesaurus.plus/related/confirmed/long_standing>.
Long standing or Confirmed. 2016. Accessed July 31, 2026. https://thesaurus.plus/related/confirmed/long_standing.
Google Ngram Viewer shows how "confirmed" and "long standing" have occurred on timeline