1.不需要的；没必要的；多余的 If you describe something as unnecessary, you mean that it is not needed or does not have to be done, and is undesirable.
unnecessarily I didn't want to upset my husband or my daughter unnecessarily... 我不想让我的丈夫和女儿不必要地担忧。 A bad keyboard can make life unnecessarily difficult. 一个坏键盘可以让生活变得异常麻烦。
