Synonyms|132Antonyms|7|Broader|1Narrower|0Related|63
4
painful
4
tedious
4
wearing
4
wearying
3
fatiguing
3
back-breaking
3
taxing
3
wearisome
2
disciplinary
2
forced
2
severe
2
trying
2
uphill
1
all out
1
annoying
1
besetting
1
bothersome
1
castigatory
1
challenging
1
chastening
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APASmart Define. (2016). gruelling thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/gruelling/thesaurus/synonyms
ChicagoSmart Define. 2016. "gruelling thesaurus" https://smartdefine.org/gruelling/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, gruelling thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/gruelling/thesaurus/synonyms>.
MLASmart Define. "gruelling thesaurus" 26 February 2016. Web. 25 September 2026. <https://smartdefine.org/gruelling/thesaurus/synonyms>