| inharmonious(adjective, flat, discordant, dissonant, screeching) |
| inharmony |
| interference(noun, trouble, dispute, conflict, disagreement) |
| irregular(adjective, flat, different, discordant, incongruous) |
| jarring(noun, adjective, flat, noise, tumult) |
| misbelief(noun, dispute, disagreement, opposition, protest) |
| nonagreement(noun, disagreement, opposition, protest, discord) |
| nonconcurrence(noun, disagreement, opposition, protest, discord) |
| nonconformism(noun, dispute, disagreement, opposition, protest) |
| nonconformity(noun, dispute, disagreement, opposition, protest) |
| nope(noun, disagreement, opposition, protest, discord) |
| not harmonious(expression, adjective, flat, discordant, dissonant) |
| objection(noun, disagreement, opposition, protest, discord) |
| off-pitch(adjective, flat, discordant, dissonant, screeching) |
| off-tone(adjective, flat, discordant, dissonant, screeching) |
| off note |
| opposition(noun, trouble, dispute, conflict, disagreement) |
| out of keeping(expression, adjective, idiom, flat, discordant) |
| out of pitch(expression, adjective, idiom, flat, discordant) |
| out of tune(expression, adjective, idiom, flat, discordant) |