Search Result for "unregularity": 
Wordnet 3.0

NOUN (1)

1. not characterized by a fixed principle or rate; at irregular intervals;
[syn: irregularity, unregularity]



WordNet (r) 3.0 (2006):

unregularity
    n 1: not characterized by a fixed principle or rate; at
         irregular intervals [syn: irregularity, unregularity]
         [ant: regularity]