无所忌惮

Explanation: Dread fear × without scruple, whatever. 　　Source: "Appreciative together under the discipline" from the river stone shrine, before the king away from light and other safety and punish, the nothing to fear, day and night in the hall after the show horse, clamoring for the music. " 　　Examples: Its contempt for things at the ~ Zhigang also. ★ "two-way three-book Yichuan" Thesaurus:  rush in where angels fear to tread, audacious in the extreme; with reckless daring, Wusuo scruple, Daringness Bao Shen, Just full of bile, Bold, such as bucket, not care a bean (s), to have plenty of guts Antonym Group:  A deep discharge thin, Cautious and conscientious, put a fire under a pile of faggots— a hidden danger, sit without approaching the stair way, feel like standing upon the edge of an abyss, tread on delicate ground, (literally) to walk on ice--cautious Pro Yuan, Carry out a deep thin, jitter, toward Less evening, pull sb's chestnut out of the fire, a blind man on a blind horse— — rushing headlong to disaster, a blind man on a blind horse— — rushing headlong to disaster, Jaws of death as the tiger's mouth Seize food, beard the lion in his den