Synonyms of age-old

1 Syllable
old
2 Syllables
hoary, oldie, time-worn, cast-off, aged, hoarier, old-time, olden, ancient, castoff, archaic
3 Syllables
vintage, antique, timeworn, demode
4 Syllables
old-fashioned, antiquated, immemorial, venerable
5 Syllables
well-established, antediluvian