Synonyms|324Antonyms|60|Broader|8Narrower|1Related|63
12
harshness
10
bloodlust
10
hardship
9
permanence
9
severity
8
asperity
8
rigorousness
7
coldness
7
hardness
6
inclemency
6
nip
6
rigor
6
stiffness
5
coolness
5
grimness
5
iciness
5
prudery
4
cogency
4
frigidity
4
precision
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APASmart Define. (2015). rigour thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/rigour/thesaurus/synonyms
ChicagoSmart Define. 2015. "rigour thesaurus" https://smartdefine.org/rigour/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, rigour thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/rigour/thesaurus/synonyms>.
MLASmart Define. "rigour thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/rigour/thesaurus/synonyms>