IPA: //ˈfleɪɡrəntli//
KK: /ˈfleɪɡrəntli/
In a way that is very obvious and shocking, often because it is wrong or illegal.
He was flagrant in his disregard for the rules, making it clear he didn't care about the consequences.
Flagrantly → It is formed from "flagrare" (meaning to burn) and the adverbial suffix "-ly" (meaning in a manner of). The word "flagrantly" means in a manner that is glaringly obvious or burning with intensity, often used to describe actions that are shockingly bad or wrong.
Think of something that is 'burning' with intensity ('flagrare') to remember that 'flagrantly' describes actions that are glaringly obvious or shockingly bad.