slang Intoxicated with drugs, especially to the point of being mentally or physically incapacitated; very high. I tried asking them what had happened, but they were too snaved-in to give me a proper answer. I like getting buzzed from a bit of weed every now and then, but I hate getting so snaved-in that I can't hold a conversation with someone.

snaved in

mod. drug intoxicated. By midnight they were so snaved in they couldn’t walk.
See also: snaved