Longstanding
Longstanding adjective - Having existed for a long time.
Thorough and longstanding are semantically related. in deep-rooted topic. In some cases you can use "Thorough" instead an adjective "Longstanding".
Thorough
Thorough adjective - Having no exceptions or restrictions.
Longstanding and thorough are semantically related. Sometimes you can replace term "Longstanding" with "Thorough", this adjectives are similar.
Nearby Words: thoroughly, thoroughness
Mutual synonyms
Cite this Source
Thorough and Longstanding. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/longstanding/thorough
Longstanding & Thorough. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/longstanding/thorough>.
Thorough or Longstanding. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/longstanding/thorough.
Google Ngram Viewer shows how "longstanding" and "thorough" have occurred on timeline