1. outstandingly bad; shocking: "egregious abuses of copyright"
2. remarkably good.archaic
Word Originmid 16th century (in egregious (sense 2)): from Latin egregius ‘illustrious’, literally ‘standing out from the flock’, from ex- ‘out’ + grex, greg- ‘flock’. Sense 1 (late 16th century) probably arose as an ironic use.