51 entries under strong topic. ×

71
persistent(adjective, tough, continue, strain)
64
enduring(verb, adjective, calm, great)
53
stable(adjective, tough, strain, firm)
52
permanent(adjective, calm, secure, tough)
46
firm(adjective, calm, secure, tough)
37
constant(adjective, calm, secure, tough)
37
unfluctuating(adjective, calm, secure, strain)
30
steadfast(adjective, calm, secure, strain)
26
invariable(adjective, calm, secure, strain)
25
steady(adjective, calm, secure, strain)
23
unalterable(adjective, calm, secure, strain)
22
everlasting(adjective, stable, persistent, constant)
20
abiding(verb, adjective, calm, secure)
19
stabile(adjective, calm, secure, strain)
15
fixed(adjective, tough, firm, stable)
12
immutable(adjective, calm, secure, firm)
11
indestructible(adjective, tough, stable, sturdy)
9
unchangeable(adjective, calm, solid, steady)
9
unwavering(adjective, calm, firm, solid)
8
indissoluble(adjective, enduring, permanent, everlasting)
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APASmart Define. (2016). lasting thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/lasting/thesaurus/synonyms
ChicagoSmart Define. 2016. "lasting thesaurus" https://smartdefine.org/lasting/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, lasting thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/lasting/thesaurus/synonyms>.
MLASmart Define. "lasting thesaurus" 26 February 2016. Web. 22 September 2026. <https://smartdefine.org/lasting/thesaurus/synonyms>