Egregious

Surpassing; extraordinary; distinguished (in a bad sense); -- formerly used with words importing a good quality, but now joined with words having a bad sense; as, an egregious rascal; an egregious ass; an egregious mistake.

conspicuously and outrageously bad or reprehensible; "a crying shame"; "an egregious lie"; "flagrant violation of human rights"; "a glaring error"; "gross ineptitude"; "gross injustice"; "rank treachery"