Search Result for "laborious": 
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:

Laborious \La*bo"ri*ous\, a. [L. laboriosus, fr. labor labor:
   cf. F. laborieux.]
   1. Requiring labor, perseverance, or sacrifices; toilsome;
      tiresome.
      [1913 Webster]

            Dost thou love watchings, abstinence, or toil,
            Laborious virtues all? Learn these from Cato.
                                                  --Addison.
      [1913 Webster]

   2. Devoted to labor; diligent; industrious; as, a laborious
      mechanic.
      [1913 Webster] -- La*bo"ri*ous*ly, adv. --
      La*bo"ri*ous*ness, n.
      [1913 Webster]


WordNet (r) 3.0 (2006):

laborious
    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]