反义词是false ，表示虚假的，例如：
1、He used a false name to get the job.他用假名得到了这份工作。
2、She gave false information to the insurance company.她向保险公司提供了不真实的资料。
3、Predictions of an early improvement in the housing market proved false.认为房屋市场很快就有好转的预测结果证明是错误的。
genuine的反义词
genuine
adj. 真正的，非伪造的真诚的，真心的
其反义词有虚伪的false，hypocritical，deceptive等等，伪造的forged，mock，imitative，counterfeit等等
①虚伪的hypocritical
It would be hypocritical of me to have a church wedding when I don't believe in God.
我不信上帝却到教堂举行婚礼，那就是我的虚伪了。
②伪造的counterfeit
Are you aware these notes are counterfeit?
你觉察到这些钞票是伪造的吗
