egregious
1. [ adjective ] conspicuously and outrageously bad or reprehensible
Synonyms: glaring flagrant gross rank crying
Examples:

"a crying shame" "an egregious lie" "flagrant violation of human rights" "a glaring error" "gross ineptitude" "gross injustice" "rank treachery"

Related terms: conspicuous
Similar spelling:   egression