Search Result for "atonalism": 
Wordnet 3.0

NOUN (1)

1. the absence of a key; alternative to the diatonic system;
[syn: atonality, atonalism]



WordNet (r) 3.0 (2006):

atonalism
    n 1: the absence of a key; alternative to the diatonic system
         [syn: atonality, atonalism] [ant: key, tonality]