不经之谈

Explanation: By: normal, common thing, rules, etc.; talk: words. Absurd, then there is no basis 　　Usage: Partial official; as subject, object; containing derogatory remarks to describe unfounded 　　Source: Jin Yang Hu, "Sub-Book Commandments": "no pass without talk, without hearing the language of praise or blame." 　　Examples: Cloud County West, a small Tangxi, Local Customs Cloud: This cloud Anxi River Dragon and pro-dragon, which was ~ also. (Song Sun Guangxian "Bei" IV) Thesaurus:  quirkiness antic, Arabian Nights, Xieshanchaohai