44 entries under substantial topic. ×

3
uniform(adjective, calm, strong, secure, firm)
2
deep-rooted(adjective, calm, strong, solid, steady)
2
reliable(adjective, calm, strong, tough, solid)
2
resolute(calm, strong, firm, solid, true)
2
secure(calm, strong, firm, solid, true)
2
set(adjective, calm, strong, firm, solid)
2
solid(calm, strong, certain, steady)
2
well-built(calm, strong, solid, steady)
2
well-founded(calm, strong, solid, steady)
1
anchored(calm, strong, solid, steady)
1
balanced(calm, strong, solid, steady)
1
brick-wall(calm, strong, solid, steady)
1
calm(strong, solid, steady, even)
1
equable(adjective, calm, strong, secure, firm)
1
fixed resistant(expression, calm, strong, solid)
1
nailed(calm, strong, solid, steady)
1
poised(calm, strong, solid, steady)
1
safe(calm, strong, solid, steady)
1
solid as a rock(expression, idiom, calm, strong)
1
stalwart(calm, strong, solid, steady)
10 years ago|21k views|share |citing 
APASmart Define. (2016). lasting thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/lasting/thesaurus/synonyms
ChicagoSmart Define. 2016. "lasting thesaurus" https://smartdefine.org/lasting/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, lasting thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/lasting/thesaurus/synonyms>.
MLASmart Define. "lasting thesaurus" 26 February 2016. Web. 23 September 2026. <https://smartdefine.org/lasting/thesaurus/synonyms>