The Collaborative International Dictionary of English v.0.48:
Unmelodious \Unmelodious\ See melodious.WordNet (r) 3.0 (2006):
unmelodious adj 1: not having a musical sound or pleasing tune [syn: tuneless, untuneful, unmelodious] [ant: melodious, tuneful] 2: lacking melody [syn: unmelodious, unmelodic, unmusical] [ant: melodic, melodious, musical]