ageless, hallowed, timeless, time-tested, timeworn, traditional, tried, tried-and-trueaged, age-old, ancient, antediluvian, antique, dateless, hoar, hoary, immemorial, old, venerableaging(or ageing), matureantiquated, archaic, archaistic, dated, fusty, geriatric, medieval(also mediaeval), moldy, Noachian, obsolete, outmoded, out-of-date, passéold-fashioned, old-time, old-world, retro, vintagedurable, enduring, lasting, long-lived, permanentclassic, classicalprehistoric(also prehistorical), primeval, primordial