Synonyms|777Antonyms|138|Broader|12Narrower|7Related|206

84 entries under tough topic. ×

1
undisciplined(difficult, obstinate, stubborn, willful)
1
unimpressible(adjective, mean, hard, harsh)
1
unsparing(adjective, strong, hard, sturdy)
0
astringent(adjective, strong, hard, sturdy)
0
bitter(adjective, strong, hard, sturdy)
0
by the book(expression, adjective, idiom, strong, hard)
0
dense(adjective, strong, hard, sturdy)
0
disciplinary(adjective, strong, hard, sturdy)
0
ferric(adjective, strong, hard, sturdy)
0
ferrous(adjective, strong, hard, sturdy)
0
forbidding(adjective, strong, hard, sturdy)
0
frowning(adjective, strong, hard, sturdy)
0
hang-tough(adjective, strong, hard, sturdy)
0
hard-shell(adjective, strong, hard, sturdy)
0
heavy(adjective, strong, hard, sturdy)
0
insensible(adjective, strong, hard, sturdy)
0
mortified(adjective, strong, hard, sturdy)
0
rock hard(expression, adjective, strong, hard)
0
rough(adjective, strong, hard, sturdy)
0
rugged(adjective, strong, hard, sturdy)
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ChicagoSmart Define. 2015. "immovable thesaurus" https://smartdefine.org/immovable/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, immovable thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/immovable/thesaurus/synonyms>.
MLASmart Define. "immovable thesaurus" 3 August 2015. Web. 27 September 2026. <https://smartdefine.org/immovable/thesaurus/synonyms>