95 entries under vigorous topic. ×

8
hardy(adjective, person, body, strong, sound)
8
thorough(adjective, sound, complete, total, perfect)
6
ample(adjective, good, strong, reasonable, fair)
6
healthy(adjective, strong, hard, sound, complete)
5
deep(verb, adjective, set, sound, heavy)
5
well-constructed(complete, sturdy)
4
hale(adjective, strong, sound, complete, tough)
4
nourishing(adjective, enthusiastic, sincere, wholehearted)
4
total(verb, adjective, sound, complete, excellent)
3
cordial(adjective, enthusiastic, sincere, wholehearted)
3
filling(adjective, enthusiastic, sincere, wholehearted)
3
sincere(adjective, good, strong, reasonable, honest)
2
active(adjective, strong, sound, tough, heavy)
2
fit(adjective, strong, hard, sound, complete)
2
flawless(adjective, good, great, complete, correct)
2
friendly(adjective, enthusiastic, sincere, wholehearted)
2
generous(adjective, strong, big, important, enthusiastic)
2
glowing(adjective, enthusiastic, sincere, wholehearted)
2
intense(adjective, complete, firm, total, enthusiastic)
2
right(adjective, good, sound, complete, smooth)
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APASmart Define. (2016). solid thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/solid/thesaurus/synonyms
ChicagoSmart Define. 2016. "solid thesaurus" https://smartdefine.org/solid/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, solid thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/solid/thesaurus/synonyms>.
MLASmart Define. "solid thesaurus" 29 March 2016. Web. 22 September 2026. <https://smartdefine.org/solid/thesaurus/synonyms>