悍然的英文：
brazenly; flagrantly; outrageously

参考例句：

The outlaw pulled out a dagger and bade defiance to the policemen.
那名歹徒拔出匕首,悍然与警察对抗。

brazenly是什么意思：
ad. 厚脸皮地

The factory director brazenly harbors evildoers. This has evoked the strong indignation of the workers.
厂长明目张胆地包庇坏人，这激起了工人们的强烈义愤。

Some few even go so far as to brazenly claim credit for work that was done by others
个别恶劣的还窃取别人的成果去报喜称功，一点不觉得惭愧。

flagrantly是什么意思：
ad. 千真万确地;太甚地
outrageously是什么意思：
ad. 残暴地;蛮横地

The price is outrageous.
价钱高得吓人。

his behavior was an outrageous flaunt.
他的行为是一种无耻的炫耀。

French scientists were outraged.
法国科学家被激怒了。