Synonyms|369Antonyms|90|Broader|0Narrower|0Related|365

43 entries under serious topic. ×

1
mulish(adjective, strong, hard, tough, severe)
1
stiff-necked(adjective, strong, hard, tough, severe)
0
heavy(adjective, strong, hard, tough, severe)
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APASmart Define. (2015). flinty thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/flinty/thesaurus/synonyms
ChicagoSmart Define. 2015. "flinty thesaurus" https://smartdefine.org/flinty/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, flinty thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/flinty/thesaurus/synonyms>.
MLASmart Define. "flinty thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/flinty/thesaurus/synonyms>