15 entries under toughness topic. ×

15
strictness(noun, easy, condition, discipline, firmness)
12
austerity(noun, easy, condition, discipline, firmness)
12
harshness(noun, easy, condition, discipline, firmness)
11
severity(noun, easy, condition, discipline, firmness)
9
sternness(noun, easy, condition, discipline, firmness)
8
hardness(noun, easy, condition, discipline, firmness)
8
rigor(noun, easy, condition, discipline, firmness)
7
rigidity(noun, easy, condition, discipline, firmness)
6
rigorousness(noun, easy, condition, discipline, firmness)
5
acerbity(noun, discipline, firmness, sharpness, severity)
5
grimness(noun, discipline, firmness, severity, harshness)
5
sharpness(noun, discipline, firmness, severity, harshness)
1
firmness(noun, severity, harshness, conformity)
1
hardheartedness(noun, discipline, firmness, severity, harshness)
1
unkindness(noun, discipline, firmness, severity, harshness)
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APASmart Define. (2015). stringency thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/stringency/thesaurus/synonyms
ChicagoSmart Define. 2015. "stringency thesaurus" https://smartdefine.org/stringency/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, stringency thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/stringency/thesaurus/synonyms>.
MLASmart Define. "stringency thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/stringency/thesaurus/synonyms>