If something such as a course of action is impracticable, it is impossible to do.
例句
Such measures would be highly impracticable and almost impossible to apply.這樣的措施非常不切實際,幾乎不可能付諸實施。
英漢詞典釋義
adj.
不能實行的,難對付的
The scheme was criticized as too idealistic and impracticable.人們批評這個方案太理想化,行不通。The damage it would cause makes the idea utterly impracticable.這個想法可能造成損害，以致根本不能采納。
n.
英英詞典釋義
Adjective
1. not capable of being carried out or put into practice;
"refloating the sunken ship proved impracticable because of its fragility""a suggested reform that was unfeasible in the prevailing circumstances"