adjective

(of an action considered wrong or immoral) conspicuously or obviously offensive.

a flagrant violation of the law

blatant,glaring,obvious,overt,evident,conspicuous,naked,barefaced,shameless,brazen,audacious,brass-necked,undisguised,unconcealed,patent,transparent,manifest,palpable,out and out,utter,complete,outrageous,scandalous,shocking,disgraceful,reprehensible,dreadful,terrible,gross,enormous,heinous,atrocious,monstrous,wicked,iniquitous,villainous,arrant