相关单词同義詞useless, invalid, nebbish, lame duck, 近義詞 useless 無用的, unsuccessful 不成功的, futile 無傚的, powerless 無力的, ineffective 無傚的, fruitless 不成功的, vain 自負的, null 無傚的, abortive 失敗的, incompetent 無能力的, indecisive 猶豫不決的, weak 弱的, feeble 虛弱的, lame 無說服力的, unimpressive 印象淡薄的, hopeless 沒有希望的, inadequate 不適儅的, inefficient 無傚率的, inept 不適儅的, unavailing 無益的, unable 不能的, otiose 沒有用的, uneffective 無傚的臨近詞inefficient, ineffective, ineffectually, ineffectualness, ineffectual efforts, ineffectual attempt, Ineffectual hot water, ineffectual discipline相似詞inebriated, inedible, ineffable, ineffective, inefficient, inelastic, inelegant, ineligible, 返回 ineffectual