Synonyms|380Antonyms|13|Broader|2Narrower|0Related|410

57 entries under strong topic. ×

1
hard-nosed(adjective, hard, tough, severe)
1
hard-shell(adjective, hard, tough, severe)
1
hardheaded(adjective, hard, tough, severe)
1
implacable(adjective, hard, tough, severe)
1
inexorable(adjective, hard, tough, severe)
1
inflexible(adjective, hard, tough, severe)
1
mortified(adjective, hard, tough, severe)
1
mulish(adjective, hard, tough, severe)
1
relentless(adjective, hard, tough, severe)
1
rigid(adjective, hard, tough, severe)
1
rigorous(adjective, hard, tough, severe)
1
steely(adjective, hard, tough, severe)
1
stiff-necked(adjective, hard, tough, severe)
1
tough(adjective, hard, severe, harsh)
1
unrelenting(adjective, hard, tough, severe)
1
unsparing(adjective, hard, tough, severe)
0
adamant(adjective, hard, tough, sturdy)
0
adamantine(adjective, hard, tough, sturdy)
0
dense(adjective, hard, tough, sturdy)
0
ferric(adjective, hard, tough, sturdy)
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APASmart Define. (2015). frowning thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/frowning/thesaurus/synonyms
ChicagoSmart Define. 2015. "frowning thesaurus" https://smartdefine.org/frowning/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, frowning thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/frowning/thesaurus/synonyms>.
MLASmart Define. "frowning thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/frowning/thesaurus/synonyms>