116 entries under tough topic. ×

1
untoward(firm, unreasonable, grim, inflexible)
1
wayward(adjective, difficult, obstinate, stubborn)
0
bitter(adjective, strong, hard, harsh)
0
by the book(expression, adjective, idiom, strong, hard)
0
disciplinary(adjective, strong, hard, sturdy)
0
ferric(adjective, strong, hard, sturdy)
0
ferrous(adjective, strong, hard, sturdy)
0
frowning(adjective, strong, hard, sturdy)
0
hard-shell(adjective, strong, hard, sturdy)
0
hardboiled
0
mortified(adjective, strong, hard, sturdy)
0
robust(adjective, strong, hard, sturdy)
0
rock hard(expression, adjective, strong, hard)
0
rugged(adjective, strong, hard, harsh)
0
steel(adjective, strong, hard, sturdy)
0
tough inflexible(expression, strong, hard, sturdy)
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APASmart Define. (2016). unbending thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/unbending/thesaurus/synonyms
ChicagoSmart Define. 2016. "unbending thesaurus" https://smartdefine.org/unbending/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, unbending thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/unbending/thesaurus/synonyms>.
MLASmart Define. "unbending thesaurus" 24 March 2016. Web. 20 September 2026. <https://smartdefine.org/unbending/thesaurus/synonyms>