旁若无人

Explanation: Side and no one seemed to. Described as arrogant, not to put others looked down on. 　　Usage: The main predicate; as predicate, attributive, adverbial; containing derogatory 　　Source: Qian Han, "Historical Legends of Assassins": "Gao Jianli hit building, Jing Ke and the song in the city, the phase of fun, Yi Er relative to weep, who no one else." 　　Examples: Chen Taiwei disembark early, the high-spirited course, ~, sitting in the middle. (Ming Shinai "Tales of" seventy-fifth back) 　　Riddle: Proud; you; Xi; bit; the Thesaurus:  with a swagger; in an ostentatious manner