| Meaning | not capable of occurring or being accomplished / accomplished or dealt with. |
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| Examples | - "an impossible dream"
- "an impossible situation"
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| Attribute of | possibility, possibleness | capability of existing or happening / happening / happening or being true |
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| Narrower | hopeless | Certain to fail |
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| impracticable, infeasible, unfeasible, unworkable | not capable of being carried out or put into practice |
| out | not worth considering as a possibility |
| unachievable, unattainable, undoable, unrealizable | impossible to achieve |
| See also | hopeless | Without hope because there seems to be no possibility of comfort or success |
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| impractical | not practical |
| insurmountable, unsurmountable | not capable of being surmounted or overcome |
| unrealistic | not realistic |
| unthinkable | Incapable of being conceived or considered |
| Opposite | possible | capable of happening / happening or existing |
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| Spanish | imposible |
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| Catalan | impossible |
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| Nouns | impossibility, impossibleness | incapability of existing or occurring |
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| Adverbs | impossibly | to a degree impossible of achievement |
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