| harsh(asperous, grinding, dissonant, clangorous, stridulous) |
| inconsonant(asperous, dissonant, stridulous) |
| inharmonic(asperous, dissonant, stridulous) |
| inharmonious(adjective, discordant, screeching, tuneless) |
| irregular(adjective, discordant, screeching, tuneless) |
| jangling(asperous, dissonant, stridulous) |
| jarring(adjective, discordant, screeching, tuneless) |
| not harmonious(adjective, discordant, screeching, tuneless) |
| not smooth(expression, harsh, asperous, grinding, dissonant) |
| off-pitch(adjective, discordant, screeching, tuneless) |
| off-tone(adjective, discordant, screeching, tuneless) |
| on a sour note(expression, idiom, asperous, dissonant, stridulous) |
| out-of-key(adjective, harsh, asperous, grinding, dissonant) |
| out-of-tune(harsh, asperous, grinding, dissonant, clangorous) |
| out of keeping(adjective, discordant, screeching, tuneless) |
| out of pitch(adjective, discordant, screeching, tuneless) |
| scratchy(harsh, asperous, grinding, dissonant, clangorous) |
| screeching(adjective, discordant, asperous, grinding, clangorous) |
| sour(adjective, discordant, screeching, tuneless) |
| sour note(adjective, discordant, screeching, tuneless) |