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Synonyms for arduous
adj difficult, hard to endureAntonyms for arduous
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the
Philip Lief Group.
backbreaking
adjective. strenuous
complicated
adjective. difficult, complex
difficult
adjective. hard on someone; hard to do
- ambitious
- arduous
- backbreaker
- bothersome
- burdensome
- challenging
- crucial
- demanding
- difficile
- easier said than done
- effortful
- exacting
- formidable
- galling
- gargantuan
- hard-won
- heavy
- herculean
- immense
- intricate
- irritating
- labored
- laborious
- no picnic
- not easy
- onerous
- operose
- painful
- problem
- problematic
- prohibitive
- rigid
- severe
- stiff
- strenuous
- titanic
- toilsome
- tough
- troublesome
- trying
- unyielding
- uphill
- upstream
- wearisome
effortful
adjective. burdensome
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the
Philip Lief Group.