Synonyms|643Antonyms|183|Broader|10Narrower|12Related|1.3k
3
all-out
3
anguishing(adjective, painful)
3
annoying(adjective, dull, boring, painful, tedious)
3
besetting(adjective, painful)
3
bitter(adjective, painful)
3
cantankerous(adjective, difficult)
3
cliffhanging
3
climacteric
3
cramping(adjective, painful)
3
cutting(adjective, painful)
3
delicate
3
distressful(adjective, painful)
3
emphatic
3
finicky(adjective, tough, difficult, problematic, trying)
3
fussy(adjective, hard, tough, difficult, problematic)
3
gargantuan(tough, severe, painful, problematic, trying)
3
gnawing(adjective, painful)
3
high-pressure
3
killing
3
no picnic(expression, adjective, tough, severe, rough)
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ChicagoSmart Define. 2016. "arduous thesaurus" https://smartdefine.org/arduous/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, arduous thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/arduous/thesaurus/synonyms>.
MLASmart Define. "arduous thesaurus" 26 February 2016. Web. 21 September 2026. <https://smartdefine.org/arduous/thesaurus/synonyms>