肆无忌惮

Explanation: Stanford: impudent; bogey: scruples; dread: fear. Very presumptuous, it is not scruples. 　　Usage: Supplemental; as predicate, attributive, adverbial; containing derogatory 　　Source: Han Dai Holy "Book of Doctrine of the Mean": "Villain of the Doctrine of the Mean also; villains have no fear." Zhu Xi Song Note: "I do not know there is such a villain, then Stanford would like Wang Xing, and carry nothing to fear. " 　　Examples: They are the rampage, Barbara is ~. (Guo "The Yellow River and Yangtze River Dialogue") Thesaurus:  have (everything) one's own way, exorbitance, Plaguing the country Loudly, behave unscrupulously, anarchy, chaos, misrule, perplex, sort