116 entries under substantial topic. ×

21
reliable(adjective, calm, good, clear, strong)
19
sturdy(adjective, calm, strong, hard, complete)
18
hearty(adjective, health, good, strong, complete)
16
vigorous(adjective, health, strong, complete, tough)
15
secure(adjective, calm, good, clear, strong)
13
hardy(adjective, health, strong, tough, fit)
12
tough(adjective, calm, strong, fit, firm)
12
well-founded(adjective, calm, good, strong, secure)
11
rugged(adjective, strong, tough, fit, solid)
10
heavy(adjective, strong, hard, tough, solid)
9
staunch(adjective, health, calm, strong, secure)
9
sure(adjective, calm, clear, strong, secure)
8
balanced(adjective, calm, strong, secure, reasonable)
8
powerful(adjective, clear, strong, direct, tough)
7
able-bodied(adjective, strong, tough, right, fit)
7
potent(adjective, clear, strong, direct, tough)
7
together(adjective, calm, good, strong, complete)
7
well-built(adjective, calm, strong, secure, tough)
6
stalwart(adjective, calm, strong, tough, fit)
5
dense(adjective, strong, hard, compact)
10 years ago|68k views|share |citing 
APASmart Define. (2016). sound thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/sound/thesaurus/synonyms
ChicagoSmart Define. 2016. "sound thesaurus" https://smartdefine.org/sound/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, sound thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/sound/thesaurus/synonyms>.
MLASmart Define. "sound thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/sound/thesaurus/synonyms>