Search Result for "sisyphean": 
Wordnet 3.0

ADJECTIVE (2)

1. of or relating to Sisyphus;

2. both extremely effortful and futile; 



The Collaborative International Dictionary of English v.0.48:

Sisyphean \Sis`y*phe"an\, a.
   Relating to Sisyphus; incessantly recurring; as, Sisyphean
   labors.
   [1913 Webster]


WordNet (r) 3.0 (2006):

Sisyphean
    adj 1: of or relating to Sisyphus
    2: both extremely effortful and futile