time-honoured
adjective
[ ˈtʌɪmˌɒnəd ]
• (of a custom or tradition) respected or valued because it has existed for a long time.
• "the eldest son was named, in time-honoured fashion, after his father"
Similar:
traditional,
established,
long-established,
long-standing,
long-lived,
old-time,
historic,
age-old,
folk,
old-world,
ancestral,
enduring,
lasting,
respected,
tried and tested,
proven,
customary,
conventional,
familiar,
classic,
ritual,
ritualistic,
habitual,
set,
fixed,
routine,
usual,
wonted,