| incommensurable(disagreement, irrelation) |
| incompetent(adjective, useless, unfit) |
| inconsequent |
| inconsequential(insignificant, unimportant, trivial, inappropriate, irrelevant) |
| inconsiderable(insignificant, unimportant, trivial, inconsequential, irrelevant) |
| inconsiderate(insignificant, unimportant, trivial, inconsequential, irrelevant) |
| inconsonant(wrong, suitable, improper, tasteless, unsuitable) |
| indecorous(wrong, suitable, improper, tasteless, unsuitable) |
| inefficacious(wild, unreasonable, useless, absurd, abstract) |
| inessential(insignificant, unimportant, trivial, inconsequential, irrelevant) |
| inexpedient(adjective, wrong, false, awkward, inadequate) |
| infeasible(wild, unreasonable, useless, absurd, unrealistic) |
| insufficient(adjective, useless, unfit) |
| inutile(adjective, useless, unfit) |
| irregular(wrong, false, awkward, unsuitable, unfitting) |
| ivory-tower(wild, unreasonable, useless, absurd, abstract) |
| kaput(adjective, useless, unfit) |
| laid low(expression, adjective, inadequate, useless, inappropriate) |
| left-field(wrong, suitable, improper, tasteless, unsuitable) |
| ludicrous(adjective, wrong, false, awkward, inadequate) |