0
of long standing(expression, idiom, familiar, established, long-established)
0
practiced(familiar, established, long-established)
0
product
0
recurring(persistent, continuous, lasting, continuing, remaining)
0
remaining(persistent, lasting)
0
rooted(persistent, continuous, lasting, continuing, remaining)
0
rootedness
0
routine(persistent, continuous, lasting, continuing, remaining)
0
secular
0
sempervirent
0
sempervirid
0
solid(familiar, established, long-established)
0
staying(familiar, established, long-established)
0
steadfast
0
steady(familiar, established, long-established)
0
time-honored(familiar, established, long-established)
0
unabating(persistent, continuous, lasting, continuing, remaining)
0
unbroken
0
unchanging(permanent, recurrent, perpetual, long-term, returning)
0
unintermitting
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APASmart Define. (2015). lifelong thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/lifelong/thesaurus/synonyms
ChicagoSmart Define. 2015. "lifelong thesaurus" https://smartdefine.org/lifelong/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, lifelong thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/lifelong/thesaurus/synonyms>.
MLASmart Define. "lifelong thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/lifelong/thesaurus/synonyms>