Search Result for "irrationality": 
Wordnet 3.0

NOUN (1)

1. the state of being irrational; lacking powers of understanding;
[syn: irrationality, unreason]



The Collaborative International Dictionary of English v.0.48:

irrationality \ir*ra`tion*al"i*ty\, n.
   The quality or state of being irrational; absence of
   rationality. "Brutish irrationaliity." --South.
   [1913 Webster]


WordNet (r) 3.0 (2006):

irrationality
    n 1: the state of being irrational; lacking powers of
         understanding [syn: irrationality, unreason]