Search Result for "gruelling": 
Wordnet 3.0

ADJECTIVE (1)

1. characterized by effort to the point of exhaustion; especially physical effort;
- Example: "worked their arduous way up the mining valley"
- Example: "a grueling campaign"
- Example: "hard labor"
- Example: "heavy work"
- Example: "heavy going"
- Example: "spent many laborious hours on the project"
- Example: "set a punishing pace"
[syn: arduous, backbreaking, grueling, gruelling, hard, heavy, laborious, operose, punishing, toilsome]



The Collaborative International Dictionary of English v.0.48:

grueling \grueling\, gruelling \gruelling\adj.
   1. characterized by toilsome effort; requiring extreme
      physical or mental effort; as, a grueling campaign.

   Syn: arduous, backbreaking, back-breaking, exhausting,
        gruelling, hard, heavy, laborious, labourious,
        punishing, slavish, strenuous, toilsome.
        [WordNet 1.5]


WordNet (r) 3.0 (2006):

gruelling
    adj 1: characterized by effort to the point of exhaustion;
           especially physical effort; "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" [syn: arduous,
           backbreaking, grueling, gruelling, hard, heavy,
           laborious, operose, punishing, toilsome]