266 entries under noun topic. ×

18
severity(easy, condition, discipline, firmness)
16
stringency(easy, condition, discipline, firmness)
15
sternness(easy, condition, discipline, firmness)
14
harshness(easy, condition, discipline, firmness)
13
hardness(easy, condition, discipline, firmness)
12
hardship(trouble, easy, blow, difficulty)
11
asperity(easy, difficulty, want, mess)
11
austerity(trouble, easy, condition, want)
11
inclemency(severity, harshness, strictness, exactness)
11
precision(care, firmness, truth, distinction)
10
rigidity(easy, condition, discipline, firmness)
9
rigour
8
accuracy(care, truth, severity, harshness)
8
adversity(trouble, blow, difficulty, distress)
8
rigorousness(easy, condition, discipline, firmness)
8
stiffness(firmness, severity, harshness, strictness)
8
strictness(easy, care, condition, discipline)
7
cruelty(discipline, firmness, severity, harshness)
7
exactness(care, truth, distinction, refinement)
7
grimness(discipline, firmness, severity, harshness)
<12345…10>
11 years ago|9.6k views|share |citing 
APASmart Define. (2015). rigor thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/rigor/thesaurus/synonyms
ChicagoSmart Define. 2015. "rigor thesaurus" https://smartdefine.org/rigor/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, rigor thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/rigor/thesaurus/synonyms>.
MLASmart Define. "rigor thesaurus" 13 April 2015. Web. 26 September 2026. <https://smartdefine.org/rigor/thesaurus/synonyms>