48 entries under adjective topic. ×

3
incessant(permanent, durable, recurrent, perpetual)
3
long
2
abiding(fixed, persistent, hardened, lasting)
2
continual(fixed, persistent, continuous, lasting)
2
continuous(fixed, persistent, lasting, continuing)
2
for life(expression, idiom, lasting, longstanding)
2
indissoluble(permanent, long-term)
2
interminable
2
lengthy
2
long-life
2
long-standing(persistent, continuous, hardened, lasting)
2
strong
2
undying(permanent, recurrent, perpetual, long-term)
1
protracted(persistent, continuous, lasting, continuing)
1
deep-rooted(fixed, persistent, hardened, lasting)
1
longstanding(permanent, recurrent, perpetual, long-term)
1
ongoing(permanent, long-term)
1
stable(permanent, long-term)
1
sturdy
1
tenacious(persistent, continuous, lasting, continuing)
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APASmart Define. (2015). lifelong thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/lifelong/thesaurus/synonyms
ChicagoSmart Define. 2015. "lifelong thesaurus" https://smartdefine.org/lifelong/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, lifelong thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/lifelong/thesaurus/synonyms>.
MLASmart Define. "lifelong thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/lifelong/thesaurus/synonyms>