authentic /ɔ:ˈθentik/ adj. 1.真的，真正的： an authentic antique 真古董；an authentic manuscript 一部真正的原稿 2.可靠的，可信的：an authentic report of the wreck 关于轮船遇难情况的可靠报道［考句］ What the correspondent sent us is an authentic news report. We can depend on it.记者发给我们的是一份信得过的新闻，我们完全可以相信。
［辨析］与genuine, real和true辨见genuine
authenticity /ˌɔ:θenˈtisəti/ n. [u] 可靠性；确实性；真实性：There has been some debate over the authenticity of his will.对于他的遗嘱的真实性一直有争论。Despite its certificate of authenticity, the painting was found to be a fake.尽管有认证书，这幅画仍被发现是赝品。
