impudent厚颜无耻的;放肆的;无礼的It was impudent of her to answer like that.她竟那样回答,真太放肆了。另外还有unbridled; wanton; presumptuous; audacious等放肆impudicity; presumption; run wild; unbridled; wanton; Immodesty; shamelessness.impudicitywanton(这个放肆还有点天真活泼可爱的意思)run wild(这个意思就是很野的那种)impudicity(这个贬义的痕迹就比较严重了)unbridled……presumptuous……immodest都可表示放肆的意思…presumptuous较好点。