The term "deepsix" typically refers to something that has been buried or hidden away, often permanently. When we talk about something being "more deepsixed," we mean that it has been even further removed from sight or consciousness. Synonyms for this phrase could include words like "erased," "obliterated," "expunged," "annihilated," or "eradicated." Essentially, any word or phrase that conveys the idea of total elimination or destruction could be used to describe something that has been "more deepsixed." This term speaks to the finality of an action and the impossibility of it being undone or brought back to the surface.