Synonyms|132Antonyms|7|Broader|1Narrower|0Related|63
1
corrective
1
crushing
1
devitalizing
1
draining
1
dramatic
1
effort
1
enervating
1
enfeebling
1
fatiguesome
1
formidable
1
gripping
1
hard-earned
1
hard-fought
1
heart-pounding
1
hefty
1
high pitched
1
impenetrable
1
inflictive
1
irksome
1
killing
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APASmart Define. (2016). gruelling thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/gruelling/thesaurus/synonyms
ChicagoSmart Define. 2016. "gruelling thesaurus" https://smartdefine.org/gruelling/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, gruelling thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/gruelling/thesaurus/synonyms>.
MLASmart Define. "gruelling thesaurus" 26 February 2016. Web. 26 September 2026. <https://smartdefine.org/gruelling/thesaurus/synonyms>