Translation

極悪な / 凶悪な / 破廉恥な

Meaning

Flagitious means extremely wicked, shameful, or criminal. It is rare and literary; do not use it when you simply mean obvious or blatant.

Examples

• その小説はその将軍を極悪な支配者として描いています。
  The novel presents the general as a flagitious ruler.
• 裁判官はその凶悪な裏切りを非難しました。
  The judge condemned the flagitious betrayal.