adjective
flagrant
FLAY-grunt/ˈfleɪɡrənt/
Shockingly obvious and unacceptable.
The player's two-handed shove is a flagrant violation in front of the referee.

Etymology
The literal sense was 'burning' or 'blazing.' The sense of glaring wrongdoing probably developed through the legal phrase meaning 'with the crime still blazing'—describing someone caught in the act.
In context
I was pretty disappointed in Matt Walsh uh recently uh because he dropped a very flagrant and unnecessary fbomb on his social media post.
More examples
- Copying someone else's answers is a flagrant violation of school rules.
- The referee penalizes the player for a flagrant foul.
- The report exposes flagrant abuses of power by local officials.
Forms
flagrant
flagrantly adverb — In an obviously offensive or unacceptable way.