longstanding
1 of 1adjective/ˈlɔŋstændɪŋ/
1
having persisted or existed for a significant amount of time
C1- Their longstanding friendship began in elementary school and has endured through all the ups and downs of life.
- The company has a longstanding tradition of community involvement and philanthropy.
- This longstanding dispute between the two nations dates back centuries and shows no sign of resolution.
- The restaurant is known for its longstanding commitment to using locally sourced ingredients in its dishes.
Synonyms:
2
(of a person) having held a certain position, role, or relationship for a long time
- She is a longstanding member of the board, having served for over 20 years.
- As a longstanding employee, he’s witnessed many changes in the company.
- The teacher was a longstanding figure at the school, respected by students and colleagues alike.
- He is a longstanding member of the organization, having served on the board for over twenty years.