| inaccessible(adjective, reach, out, expensive, high-priced) |
| unobtainable(adjective, expensive, high-priced, pricey, pricely) |
| unachievable(adjective, inaccessible, impossible) |
| impossible(adjective, wild, unreasonable, useless, absurd) |
| unrealizable(adjective, unreasonable, possible, inaccessible, impossible) |
| unworkable(adjective, unreasonable, useless, absurd, excessive) |
| impracticable(adjective, wild, unreasonable, useless, absurd) |
| unapproachable(adjective, difficult, reach, expensive, high-priced) |
| unavailable(adjective, reach, expensive, high-priced, pricey) |
| unfeasible(adjective, unreasonable, useless, absurd, impractical) |
| unreachable(adjective, reach, inaccessible, impossible, out-of-the-way) |
| impractical(adjective, unreasonable, useless, absurd, possible) |
| undoable |
| hopeless(adjective, impossible, impossibility) |
| impervious(adjective, inaccessible, impossible, impossibility) |
| inconceivable(adjective, impossible) |
| infeasible(adjective, wild, unreasonable, useless, absurd) |
| absurd(adjective, wild, unreasonable, useless, preposterous) |
| insurmountable(adjective, inaccessible, impossible, impossibility) |
| out of reach(expression, idiom, impossibility) |