long-standing

Meanings

1. 1
   adj

   Having existed for a long time; of long standing.

   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.

2. 2
   adj

   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.