The definition of grueling is something exhausting, challenging or demanding.adjective
A tough and challenging bicycle ride that is very strenuous is an example of a ride that would be described as grueling.YourDictionary definition and usage example. Copyright © 2013 by LoveToKnow Corp.
Origin: prp. of obs. v. gruel, to punish < gruel
Used by arrangement with John Wiley & Sons, Inc.
- gruˈel·ing·ly adverb