132 entries under tough topic. ×

18
hearty(adjective, health, good, strong, complete)
16
vigorous(adjective, health, strong, complete)
16
whole(verb, adjective, health, good, bad)
15
secure(adjective, calm, good, clear, strong)
13
hardy(adjective, health, strong, fit)
13
normal(adjective, good, strong, correct)
12
well-founded(adjective, calm, good, strong, secure)
11
rugged(adjective, strong, fit, solid)
11
unimpaired(verb, adjective, good, bad, strong)
10
heavy(adjective, strong, hard, solid)
9
staunch(adjective, health, calm, strong, secure)
8
powerful(adjective, clear, strong, direct)
7
able-bodied(adjective, strong, right, fit)
7
effective(adjective, clear, strong, energetic)
7
in fine fettle(expression, adjective, idiom, health, strong)
7
potent(adjective, clear, strong, direct)
7
well-built(adjective, calm, strong, secure)
6
all right(expression, adjective, health, strong)
6
in good condition(expression, adjective, idiom, strong)
6
stalwart(adjective, calm, strong, fit)
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APASmart Define. (2016). sound thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/sound/thesaurus/synonyms
ChicagoSmart Define. 2016. "sound thesaurus" https://smartdefine.org/sound/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2016, sound thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/sound/thesaurus/synonyms>.
MLASmart Define. "sound thesaurus" 24 March 2016. Web. 30 September 2026. <https://smartdefine.org/sound/thesaurus/synonyms>