ಉದಾಹರಣೆ : 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.

ಸಮಾನಾರ್ಥಕ : arduous, backbreaking, grueling, hard, heavy, laborious, operose, punishing, toilsome