14
compact(adjective, close, set, hard, tough)
14
safe(adjective, calm, good, strong, complete)
14
steadfast(adjective, calm, good, strong, secure)
14
sure(adjective, calm, good, strong, tough)
13
hearty(adjective, person, body, strong, sound)
13
helpfulness
13
physical(adjective, hard, intense, material, substantial)
13
trustworthy(adjective, good, strong, sound, right)
13
valid(adjective, good, clear, sound, correct)
12
fixed(adjective, set, strong, hard, sound)
12
rugged(adjective, set, strong, sound, tough)
12
satisfying(adjective, clear, pleasant, reasonable, fair)
12
stalwart(adjective, calm, person, body, strong)
12
tangible(adjective, intense, physical, material, substantial)
12
undivided(adjective, complete, simple, total, whole)
12
well-founded(adjective, calm, good, strong, sound)
12
whole(verb, adjective, sound, complete, clean)
11
heavy(adjective, characteristic, person, set, body)
11
actual(adjective, correct, exact, physical, material)
11
close(adjective, set, hard, tough, correct)
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APASmart Define. (2016). solid thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/solid/thesaurus/synonyms
ChicagoSmart Define. 2016. "solid thesaurus" https://smartdefine.org/solid/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, solid thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/solid/thesaurus/synonyms>.
MLASmart Define. "solid thesaurus" 29 March 2016. Web. 20 September 2026. <https://smartdefine.org/solid/thesaurus/synonyms>