undoable

undoable [ʌn'du:əbl]  [ʌn'du:əbl] 

undoable 基本解释
不能做的,做不了的;
undoable 英英释义

danci.911chaxun.com

adj

1. impossible to achieve

    e.g. an unattainable goal

    Synonym: unachievable unattainable unrealizable