112 entries under substantial topic. ×

1
unfluctuating(adjective, calm, strong, secure, firm)
1
uniform(adjective, calm, strong, secure, firm)
1
unvarying(adjective, calm, strong, secure, firm)
0
compacted(adjective, strong, hard, compact)
0
consolidated(adjective, strong, hard, compact)
0
dimensional(adjective, strong, hard, compact)
0
immutable(calm, strong, steady, even)
0
invariable(calm, strong, steady, even)
0
massed(adjective, strong, hard, compact)
0
rock(adjective, strong, hard, compact)
0
settled(adjective, strong, firm, solid)
0
unalterable(calm, strong, steady, even)
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APASmart Define. (2016). sturdy thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/sturdy/thesaurus/synonyms
ChicagoSmart Define. 2016. "sturdy thesaurus" https://smartdefine.org/sturdy/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, sturdy thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/sturdy/thesaurus/synonyms>.
MLASmart Define. "sturdy thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/sturdy/thesaurus/synonyms>