18 entries under long-term topic. ×

9
continuing(adjective, continuous, permanent, recurrent, perpetual)
5
indelible(adjective, stability, permanent, lifelong)
5
indissoluble(adjective, stability, permanent, everlasting, eternal)
4
durable(adjective, enduring, lasting, permanent, recurrent)
4
fixed(adjective, enduring, lasting, permanent, perpetual)
4
unremitting(adjective, continuous, permanent, everlasting, uninterrupted)
2
deep-rooted(adjective, permanent, lifelong)
2
lifelong(permanent, recurrent, perpetual, returning)
1
forever(enduring, lasting, permanent, everlasting, perpetual)
1
in for the long haul(expression, enduring, lasting, permanent, perpetual)
1
inexhaustible(permanent, lifelong)
1
inexpungible(permanent, lifelong)
1
longstanding(permanent, recurrent, perpetual, lifelong)
1
old(permanent, recurrent, perpetual, lifelong)
1
ongoing(permanent, lifelong)
1
persisting(permanent, lifelong)
1
stable(adjective, enduring, lasting, permanent, perpetual)
1
till the cows come home(expression, idiom, permanent, lifelong)
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APASmart Define. (2016). undying thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/undying/thesaurus/synonyms
ChicagoSmart Define. 2016. "undying thesaurus" https://smartdefine.org/undying/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, undying thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/undying/thesaurus/synonyms>.
MLASmart Define. "undying thesaurus" 26 February 2016. Web. 26 September 2026. <https://smartdefine.org/undying/thesaurus/synonyms>