egregious
ih-GREE-jusadjMeaning shockingly bad; standing out for being so wrong
Memory hook EGG-GREE-jus: eggs on the king’s rug. The new cook trips and drops a whole crate of eggs on the king’s royal rug; a blunder that stands out that badly is egregious.
Printing the wrong date on every wedding invitation was an egregious mistake.
In context A small spelling slip can be forgiven, but the newspaper’s error was egregious: it named the wrong winner of the science fair in a headline across the whole front page.
Similar shocking, flagrant, glaring, outrageous
Opposite minor, trivial, slight
From Latin egregius, “standing out from the flock”: e- (out of) + grex (flock). In English it first meant outstandingly good.