114 entries under solid topic. ×

1
stark(adjective, strong, sound, tough)
1
staying put(expression, calm, strong, substantial)
1
strapping(adjective, strong, hard, sound, tough)
1
together(calm, strong, steady, substantial)
1
uniform(adjective, calm, strong, secure, firm)
1
unwavering(adjective, calm, strong, secure, firm)
0
allegiant(adjective, firm, stable, fixed)
0
certain(adjective, firm, stable, fixed)
0
cool(adjective, firm, stable, fixed)
0
hardened(adjective, strong, hard, firm)
0
hefty(strong, significant, large, robust)
0
imperturbable(adjective, firm, stable, fixed)
0
inflexible(adjective, strong, hard, firm)
0
levelheaded(adjective, firm, stable, fixed)
0
liege(adjective, firm, stable, fixed)
0
never-failing(adjective, firm, substantial, stable)
0
patterned(adjective, firm, substantial, stable)
0
regular(adjective, firm, substantial, stable)
0
reserved(adjective, firm, stable, fixed)
0
sedate(adjective, firm, stable, fixed)
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APASmart Define. (2015). durable thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/durable/thesaurus/synonyms
ChicagoSmart Define. 2015. "durable thesaurus" https://smartdefine.org/durable/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, durable thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/durable/thesaurus/synonyms>.
MLASmart Define. "durable thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/durable/thesaurus/synonyms>