Longstanding
Longstanding adjective - Having existed for a long time.
Old and longstanding are semantically related. in enduring topic. In some cases you can use "Old" instead an adjective "Longstanding", when it comes to topics like lasting, continuing.
Old
Old adjective - Being of advanced years and especially past middle age.
Longstanding and old are semantically related. You can use "Longstanding" instead an adjective "Old".
Mutual synonyms
Both words in one sentence
- Synopsis: Urahara joins some old friends for a longstanding tradition.
Source: Fanfic Recs / Bleach -
So when he sees the altercation, a combination of longstanding guilt and the old-fashioned Big Brother Instinct (he's actually a little brother, but no matter) gives him the nerve to attack the boyfriend.
Source: Wounded Gazelle Gambit
Cite this Source
Old and Longstanding. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/longstanding/old
Longstanding & Old. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/longstanding/old>.
Old or Longstanding. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/longstanding/old.
Google Ngram Viewer shows how "longstanding" and "old" have occurred on timeline