796 entries under adjective topic. ×

49
substantial(characteristic, calm, good, close)
45
firm(noun, calm, good, close)
40
sound(noun, verb, characteristic, calm)
31
strong(calm, good, person, set)
29
thick(characteristic, person, close, body)
28
hard(adverb, person, body, strong)
26
sturdy(calm, person, body, strong)
25
stable(good, strong, hard, sound)
22
dense(characteristic, person, set, body)
20
concrete(set, hard, tough, correct)
19
secure(verb, calm, strong, hard)
18
reliable(calm, strong, reasonable, easy)
18
stout(calm, person, body, strong)
17
steady(calm, good, strong, sound)
17
dependable(good, strong, reasonable, firm)
17
real(intense, physical, material, pure)
15
good(strong, great, sound, right)
15
rigid(strong, hard, complete, secure)
15
tough(calm, person, body, strong)
15
stiff(set, strong, hard, secure)
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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>