Synonyms|643Antonyms|183|Broader|10Narrower|12Related|1.3k
3
not easy(expression, idiom, tough, severe, difficulty)
3
rocky
3
stabbing(adjective, painful)
3
strained
3
strung-up
3
tensional
3
tiresome(adjective, hard, tough, severe, difficult)
3
vigorous
3
vigourous
2
abstruse(adjective, hard, fancy, difficult, complex)
2
accented
2
adverse(adjective, difficult)
2
aggravating(adjective, painful)
2
brutal(adjective, unpleasant, grim, savage, demanding)
2
chafing(adjective, painful)
2
contrary(adjective, difficult)
2
critical
2
dense(adjective, difficult, complex, intricate, thorny)
2
difficile(adjective, tough, severe, rough, difficult)
2
exigent(adjective, difficult, heavy, taxing)
For more, visit Arduous on Power Thesaurus
10 years ago|22k views|share |citing 
APASmart Define. (2016). arduous thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/arduous/thesaurus/synonyms
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>