flagrant
shockingly obvious or openly offensive
Root
- flagr / flame: burn, blaze, or glow
Other words with the flagr / flame root
- conflagration: a large destructive fire
- flame: burning fire or bright burning light
Flagrant keeps the blazing image: the fault burns in plain sight.
The flagrant error was visible before anyone checked the math.
Flagrant is not just bad. It is bad in a way that stands out, like a flame in a dark room: obvious, glaring, hard to excuse.