abiding acknowledged admitted age-long aged ancient antique chronic constant continuing conventional customary diuturnal durable enduring established evergreen fixed folk hallowed handed down hardy heroic hoary immemorial immutable intransient inveterate lasting legendary long-established long-lasting long-lived long-term longeval longevous macrobiotic mythological of long duration of long standing of the folk oral perdurable perduring perennial permanent perpetual persistent persisting prescriptive received recognized remaining rooted sempervirent stable staying steadfast time-honored tough traditional tried and true true-blue understood unfading unwritten venerable vital worshipful