unmelodious
1. [ adjective ] (music) not having a musical sound or pleasing tune
Synonyms: untuneful tuneless
Related terms: tuneful
2. [ adjective ] (music) lacking melody
Synonyms: unmusical unmelodic
Related terms: melodious monotone
Similar spelling:   unmelodiously
  unmelodic
  unwieldy
  unmelted
  unloaded
  unhealed
  unwieldiness
  unloading
  unalloyed