Synset:arduous backbreaking grueling gruelling hard heavy operose punishing toilsome
Examples:
- worked their arduous way up the mining valley
- a grueling campaign
- hard labor
- heavy work
- heavy going
- spent many laborious hours on the project
- set a punishing pace
Antonyms:effortless
Derivationally Related Form:heavinessarduousnesslaboroperosenesshardnesslaboriousnesstoilsomeness
Inherited Hypernyms:arduous
Similar to:effortful