Synonyms|359Antonyms|67|Broader|1Narrower|0Related|355

100 entries under solid topic. ×

1
big(adjective, strong, sound, tough)
1
brick-wall(calm, strong, steady, substantial)
1
capable(adjective, strong, sound, tough)
1
cinch(adjective, strong, easy, certain)
1
conclusive(adjective, strong, sound, reasonable, easy)
1
energetic(adjective, strong, sound, tough)
1
equable(calm, strong, steady, substantial)
1
even(calm, strong, steady, substantial)
1
fixed(adjective, strong, sound, secure, tough)
1
fixed resistant(expression, calm, strong, substantial)
1
forcible(adjective, strong, sound, tough)
1
hale(adjective, strong, sound, tough)
1
hard as nails(expression, adjective, idiom, strong, sound)
1
hardy(adjective, strong, sound, tough)
1
hearty(adjective, strong, sound, tough)
1
heavy-duty(adjective, strong, sound, tough)
1
hopeful(adjective, strong, easy, certain)
1
immutable(calm, strong, steady, substantial)
1
in fine feather(expression, adjective, idiom, strong, sound)
1
in the bag(expression, adjective, idiom, strong, easy)
For more, visit Well-founded on Power Thesaurus
10 years ago|5.4k views|share |citing 
APASmart Define. (2016). well-founded thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/well-founded/thesaurus/synonyms
ChicagoSmart Define. 2016. "well-founded thesaurus" https://smartdefine.org/well-founded/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, well-founded thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/well-founded/thesaurus/synonyms>.
MLASmart Define. "well-founded thesaurus" 29 March 2016. Web. 25 September 2026. <https://smartdefine.org/well-founded/thesaurus/synonyms>