| noisy(adjective, rough, harsh, wild, loud) |
| nonmelodious |
| not fit(expression, adjective, inadequate, useless, inappropriate) |
| not harmonious(expression, flat, discordant, dissonant, screeching) |
| not suitable(expression, adjective, wrong, false, awkward) |
| off |
| off-base(adjective, wrong, false, awkward, inadequate) |
| off-color |
| off-pitch(flat, discordant, dissonant, screeching, tuneless) |
| on a sour note(expression, adjective, idiom, harsh, conflicting) |
| opposed(adjective, mixed, hostile, odd, contrary) |
| opposite(adjective, harsh, different, contrary, conflicting) |
| out-of-place(adjective, wrong, false, awkward, inadequate) |
| out-of-season(adjective, wrong, false, awkward, inadequate) |
| out of accord(expression, idiom) |
| out of element(expression, adjective, idiom, inadequate, useless) |
| out of keeping(expression, adjective, idiom, flat, inadequate) |
| out of line |
| out of place(expression, adjective, idiom, strange, inadequate) |
| out of shape(expression, adjective, idiom, inadequate, useless) |