grueling Meaning, Definition & Usage
- 
       adjective satellite characterized by effort to the point of exhaustion; especially physical effort
       
       
heavy; toilsome; punishing; operose; backbreaking; hard; arduous; gruelling; laborious.
- 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