Synonyms|19Antonyms|1|Broader|13Narrower|0Related|0
2
peremptory
1
ambitious
1
astringent
1
austere
1
bitter
1
bleak
1
challenging
1
exacting
1
formal
1
onerous
1
puritanical
1
self-righteous
1
stern
1
stinging
1
stodgy
1
strait-laced
1
stringent
1
unadorned
1
uncompromising
For more, visit Rigourous on Power Thesaurus
15 years ago|0 views|share |citing 
APASmart Define. (2011). rigourous thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/rigourous/thesaurus/synonyms
ChicagoSmart Define. 2011. "rigourous thesaurus" https://smartdefine.org/rigourous/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2011, rigourous thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/rigourous/thesaurus/synonyms>.
MLASmart Define. "rigourous thesaurus" 2 May 2011. Web. 20 September 2026. <https://smartdefine.org/rigourous/thesaurus/synonyms>