266 entries under noun topic. ×

6
chill(cold, coldness, coolness, conditions)
6
exactitude(care, truth, severity, harshness)
6
preciseness(care, truth, severity, harshness)
6
roughness(severity, harshness, strictness, exactness)
6
trial(trouble, worry, difficulty, sorrow)
6
vicissitude(trouble, easy, blow, difficulty)
5
affliction(trouble, blow, distress, care)
5
cogency
5
correctness(care, precision, accuracy, exactness)
5
difficulty(trouble, easy, blow, distress)
5
distress(trouble, blow, difficulty, care)
5
tribulation(trouble, blow, distress, care)
4
chilliness(cold, coldness, coolness)
4
faultlessness(correctness, precision, accuracy)
4
firmness(severity, harshness, toughness, strictness)
4
inflexibility(firmness, severity, harshness, strictness)
4
nicety(point, care, truth, distinction)
4
ordeal(trouble, blow, distress, care)
4
punctuality
4
rigidness(obstinacy, stubbornness)
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APASmart Define. (2015). rigor thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/rigor/thesaurus/synonyms
ChicagoSmart Define. 2015. "rigor thesaurus" https://smartdefine.org/rigor/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, rigor thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/rigor/thesaurus/synonyms>.
MLASmart Define. "rigor thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/rigor/thesaurus/synonyms>