Definition from Wiktionary, the free dictionary
- That cannot be executed or carried out.
1745, Thomas Carlyle, History of Friedrich II. of Prussia, Vol. XV. (of XXI.):
- It is not divine miracle, Friedrich knows well, that has lost him his late Bohemian Conquests without battle fought: it was rash choosing of a plan inexecutable without French co-operation,--culpable blindness to the chance that France would break its promises, and not co-operate.