| erroneous(wrong, false, awkward, unsuitable, unfitting) |
| fallacious |
| feeble(inadequate, inappropriate, unhealthy, unsuitable, unlikely) |
| flimsy(adjective, inadequate, useless, inappropriate, unhealthy) |
| fricative(adjective, discordant) |
| furious(adjective, rough, harsh, dirty, coarse) |
| guttural |
| ill-adapted(adjective, inadequate, useless, inappropriate, unhealthy) |
| ill-advised(wrong, false, awkward, unsuitable, unfitting) |
| ill-equipped(adjective, inadequate, useless, inappropriate, unhealthy) |
| ill-suited(adjective, inadequate, useless, inappropriate, unhealthy) |
| ill-timed(adjective, wrong, false, awkward, inadequate) |
| immelodious |
| immiscible |
| imprudent(wrong, false, awkward, unsuitable, unfitting) |
| inaccordant |
| inaccurate(adjective, wrong, false, awkward, inadequate) |
| inadequate(useless, inappropriate, unhealthy, unsuitable, unacceptable) |
| inadmissible(adjective, wrong, false, awkward, inadequate) |
| inadvisable(adjective, wrong, false, awkward, inadequate) |