from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Physically or mentally demanding to the point of exhaustion: a grueling campaign.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Alternative spelling of gruelling.
from the GNU version of the Collaborative International Dictionary of English
- adj. characterized by toilsome effort; requiring extreme physical or mental effort.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. characterized by effort to the point of exhaustion; especially physical effort
Sorry, no etymologies found.