61 entries under solid topic. ×

1
enduring(calm, strong, steady, substantial)
1
equable(calm, strong, steady, substantial)
1
even(calm, strong, steady, substantial)
1
fixed resistant(expression, calm, strong, substantial)
1
fortified(adjective, strong, stable, sure)
1
immovable(adjective, strong, secure, steady)
1
immutable(calm, strong, steady, even)
1
invariable(calm, strong, steady, even)
1
iron(adjective, strong, stable, sure)
1
lasting(calm, strong, steady, substantial)
1
locked(verb, adjective, strong, sound, secure)
1
perdurable(calm, strong, steady, substantial)
1
permanent(calm, strong, secure, steady)
1
poised(calm, strong, steady, substantial)
1
reliable(calm, strong, steady, substantial)
1
resolute(calm, strong, steady, substantial)
1
safe(adjective, calm, strong, secure, firm)
1
safe and sound(expression, adjective, idiom, strong)
1
solid as a rock(expression, adjective, idiom, calm, strong)
1
stabile(adjective, calm, strong, steady)
11 years ago|2.9k views|share |citing 
APASmart Define. (2015). nailed thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/nailed/thesaurus/synonyms
ChicagoSmart Define. 2015. "nailed thesaurus" https://smartdefine.org/nailed/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, nailed thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/nailed/thesaurus/synonyms>.
MLASmart Define. "nailed thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/nailed/thesaurus/synonyms>