The phrase "more deep-sixed" essentially means something has been eliminated or discredited beyond any hope of revival. Some common synonyms of this phrase include buried, discarded, abandoned, forgotten, erased, expunged, obliterated, removed, eliminated, erased, wiped out, scrapped, and deleted. These synonyms all connote the idea of something being completely eliminated or dismissed, never to be seen or heard from again. Whether it's a failed project, a controversial idea, or a disgraced individual, sometimes things require being deep-sixed, and these synonyms offer alternate ways to convey that sense of finality.