46 entries under solid topic. ×

1
nailed(calm, strong, steady, substantial)
1
perdurable(calm, strong, steady, substantial)
1
poised(calm, strong, steady, substantial)
1
reliable(calm, strong, steady, substantial)
1
resolute(adjective, calm, strong, steady)
1
safe(calm, strong, steady, substantial)
1
secure(calm, strong, steady, substantial)
1
sound(adjective, calm, strong, steady)
1
stabile(calm, strong, steady, substantial)
1
stalwart(calm, strong, steady, substantial)
1
stationary(calm, strong, steady, substantial)
1
staunch(adjective, calm, strong, steady)
1
staying put(expression, calm, strong, substantial)
1
stout(adjective, calm, strong, steady)
1
sturdy(adjective, calm, strong, steady)
1
substantial(calm, strong, steady, even)
1
sure(adjective, calm, strong, steady)
1
together(calm, strong, steady, substantial)
1
tough(calm, strong, steady, substantial)
1
unalterable(calm, strong, steady, substantial)
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APASmart Define. (2016). deep-rooted thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/deep-rooted/thesaurus/synonyms
ChicagoSmart Define. 2016. "deep-rooted thesaurus" https://smartdefine.org/deep-rooted/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, deep-rooted thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/deep-rooted/thesaurus/synonyms>.
MLASmart Define. "deep-rooted thesaurus" 26 February 2016. Web. 23 September 2026. <https://smartdefine.org/deep-rooted/thesaurus/synonyms>