95 entries under vigorous topic. ×

49
substantial(adjective, characteristic, calm, good, close)
45
firm(noun, adjective, calm, good, close)
40
sound(noun, verb, adjective, characteristic, calm)
31
strong(adjective, calm, good, person, set)
26
sturdy(adjective, calm, person, body, strong)
25
stable(adjective, good, strong, hard, sound)
17
real(adjective, intense, physical, material, pure)
15
good(adjective, strong, great, sound, right)
14
safe(adjective, calm, good, strong, complete)
13
hearty(adjective, person, body, strong, sound)
12
whole(verb, adjective, sound, complete, clean)
11
full(adjective, complete, total, enthusiastic)
10
genuine(adjective, good, sound, correct, right)
10
robust(adjective, person, body, strong, sound)
10
true(adjective, good, strong, sound, smooth)
9
complete(adjective, complete, excellent, total, perfect)
9
entire(adjective, sound, complete, whole)
9
honest(adjective, strong, open, reasonable, physical)
9
intact(verb, adjective, sound, complete, simple)
9
square(noun, adjective, smooth, correct, honest)
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APASmart Define. (2016). solid thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/solid/thesaurus/synonyms
ChicagoSmart Define. 2016. "solid thesaurus" https://smartdefine.org/solid/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, solid thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/solid/thesaurus/synonyms>.
MLASmart Define. "solid thesaurus" 29 March 2016. Web. 21 September 2026. <https://smartdefine.org/solid/thesaurus/synonyms>