Synonyms of long-standing in English:

long-standing

adjective

  • 1 a long-standing business partnership
    well established, long-established; time-honored, traditional, age-old; abiding, enduring, long-lived, surviving, persistent, prevailing, perennial, deep-rooted, long-term, confirmed
    [Antonyms] new recent
  • Definition of long-standing in:

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    Word of the day anastrophe
    Pronunciation: əˈnastrəfi
    noun
    the inversion of the usual order of words...