Synonyms|165Antonyms|15|Broader|0Narrower|0Related|48

79 entries under tough topic. ×

1
rigid(adjective, strong, hard, severe)
1
rigorous(adjective, strong, hard, severe)
1
rough(adjective, strong, hard, severe)
1
serious(adjective, strong, hard, severe)
1
severe(adjective, strong, hard, firm)
1
square(adjective, severe, firm, harsh)
1
steely(adjective, strong, hard, severe)
1
stickling(adjective, severe, firm, harsh)
1
stiff-necked(adjective, strong, hard, severe)
1
straight(adjective, severe, firm, harsh)
1
stringent(adjective, severe, firm, harsh)
1
unpermissive(adjective, severe, firm, harsh)
1
unrelenting(adjective, strong, hard, severe)
1
unsparing(adjective, strong, hard, severe)
1
uptight(adjective, severe, firm, harsh)
0
adamant(adjective, strong, hard, sturdy)
0
adamantine(adjective, strong, hard, sturdy)
0
dense(adjective, strong, hard, sturdy)
0
ferric(adjective, strong, hard, sturdy)
0
ferrous(adjective, strong, hard, sturdy)
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ChicagoSmart Define. 2015. "disciplinary thesaurus" https://smartdefine.org/disciplinary/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, disciplinary thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/disciplinary/thesaurus/synonyms>.
MLASmart Define. "disciplinary thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/disciplinary/thesaurus/synonyms>