long-standing

• longstanding

long-standing (comparative longer-standing or more long-standing, superlative longest-standing or most long-standing)

1. Having existed for a long time; of long standing.
   • 2020 June 17, David Clough, “Then and now: trains through Crewe”, in Rail, page 60:

     Forty-five years ago, Crewe was witnessing the first year of the revised timetable associated with the 'Electric Scots' services, following inauguration of through London-Glasgow electric running in May 1974. Except for Euston-North Wales traffic, the long-standing practice of motive power changing at Crewe had ended.

   • 2024 December 24, Aaron Pellish, “Trump says he will direct Justice Department to ‘vigorously pursue the death penalty’”, in CNN‎^[1]:

     “As soon as I am inaugurated, I will direct the Justice Department to vigorously pursue the death penalty to protect American families and children from violent rapists, murderers, and monsters. We will be a Nation of Law and Order again!” Trump wrote on Truth Social, echoing his long-standing advocacy for use of the death penalty, which was part of his tough-on-crime rhetoric during the 2024 campaign.

2. Having been done for long enough time to become convention.

   Long-standing custom calls for referring to the town chairman as mayor, even though we don't have a mayor.

• “long-standing”, in OneLook Dictionary Search.