相关单词同义词useless, invalid, nebbish, lame duck, 近义词 useless 无用的, unsuccessful 不成功的, futile 无效的, powerless 无力的, ineffective 无效的, fruitless 不成功的, vain 自负的, null 无效的, abortive 失败的, incompetent 无能力的, indecisive 犹豫不决的, weak 弱的, feeble 虚弱的, lame 无说服力的, unimpressive 印象淡薄的, hopeless 没有希望的, inadequate 不适当的, inefficient 无效率的, inept 不适当的, unavailing 无益的, unable 不能的, otiose 没有用的, uneffective 无效的临近词inefficient, ineffective, ineffectually, ineffectualness, ineffectual efforts, ineffectual attempt, Ineffectual hot water, ineffectual discipline相似词inebriated, inedible, ineffable, ineffective, inefficient, inelastic, inelegant, ineligible, 返回 ineffectual