Wordnet 3.0
ADJECTIVE (1)
1.
of or relating to atonalism;
The Collaborative International Dictionary of English v.0.48:
atonalistic \atonalistic\ adj.
1. of or pertaining to atonalism.
[WordNet 1.5]
WordNet (r) 3.0 (2006):
atonalistic
adj 1: of or relating to atonalism